MedWorm.com provides a medical RSS filtering service. Over 6000 RSS medical sources are combined and output via different filters. This feed contains the latest items from the 'The International Journal of Cardiovascular Imaging' source. Wed, 17 Mar 2010 15:36:11 +0100 http://www.medworm.com/index.php?rid=3372489&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fy71334k6538m244t%2F The objective of this paper is the development and evaluation of a family of coronary artery region (CAR) models applied to the detection of CACs in coronary artery zones and sections. Thirty patients underwent non-contrast electron-beam computed tomography scanning. Coronary artery trajectory points as presented in the University of Houston heart-centered coordinate system were utilized to construct the CAR models which automatically detect coronary artery zones and sections. On a per-patient and per-zone basis the proposed CAR models detected CACs with a sensitivity, specificity and accuracy of 85.56 (±15.80)%, 93.54 (±1.98)%, and 85.27 (±14.67)%, respectively while the corresponding values in the zones and segments based case were 77.94 (±7.78)%, 96.57 (±4.90)%, and 73.58 (±... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3372489 Mon, 15 Mar 2010 17:59:08 +0100 3372489 http://www.medworm.com/index.php?rid=3368738&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft2k770k88283p133%2F Abstract  Accurate quantification of coronary artery calcium provides an opportunity to assess the extent of atherosclerosis disease. Coronary calcification burden has been reported to be associated with cardiovascular risk. Currently, an observer has to identify the coronary calcifications among a set of candidate regions, obtained by thresholding and connected component labeling, by clicking on them. To relieve the observer of such a labor-intensive task, an automated tool is needed that can detect and quantify the coronary calcifications. However, the diverse and heterogeneous nature of the candidate regions poses a significant challenge. In this paper, we investigate a supervised classification-based approach to distinguish the coronary calcifications from all the candi... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3368738 Sun, 14 Mar 2010 12:26:17 +0100 3368738 http://www.medworm.com/index.php?rid=3356982&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft766u638474h6665%2F Abstract  Recently, D shaped ventricle seen on gated SPECT imaging (Movahed’s sign) has shown to correlate with right ventricular overload similar to the D shape ventricle seen on echocardiography. Right ventricle (RV) imaging during gated SPECT studies is challenging because of the low tracer uptake due to relatively smaller right ventricular myocardial mass and lower coronary flow to the RV. Increased mass or workload causes higher tracer uptake in the RV wall secondary to increase in RV wall thickness and higher coronary flow. Furthermore, increased RV volume or pressure load can cause displacement of the septum towards the left ventricle causing septal flattening and a D shaped configuration of the left ventricular septum. This is an important finding that should be a... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3356982 Wed, 10 Mar 2010 15:23:47 +0100 3356982 http://www.medworm.com/index.php?rid=3356981&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F3n0v96ux8k468g43%2F Content Type Journal ArticleCategory Editorial commentDOI 10.1007/s10554-010-9602-7Authors E. E. van der Wall, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden NetherlandsH. M. Siebelink, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden NetherlandsJ. J. Bax, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3356981 Wed, 10 Mar 2010 15:23:47 +0100 3356981 http://www.medworm.com/index.php?rid=3337252&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F1720g6284k41wprp%2F Abstract  The aim of this study is to investigate new methods for describing the progression of atherosclerosis based on novel information of the growth patterns of individual abdominal aortic calcifications (AACs) over time. Lateral X-ray images were used due to their low cost, fast examination time, and wide-spread use, which facilitates a large statistical model (n > 100) based on longitudinal data. The examined cohort consisted of 103 post-menopausal women aged 62.4 years (±7.0 years) with an average number of AACs of (4.7 ± 8.0) at baseline. The subjects had X-ray images taken in 1992–1993 (baseline) and again in 2000–2001 (follow-up). The growth patterns of the individual AACs were derived based on registered baseline and follow-up... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3337252 Wed, 03 Mar 2010 08:05:52 +0100 3337252 http://www.medworm.com/index.php?rid=3315746&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa2031g4gml3jh387%2F Abstract  Congenitally corrected transposition of the great arteries (CCTGA) is a rare form of congenital heart disease, constituting 0.5% of all congenital heart defects. The incidence of left ventricle (non-systemic ventricle) outflow tract obstruction ranges between 44 and 57%. Herein, we present the case of a 45 year old woman with CCTGA with progressively worsening dyspnea who had been referred for surgical correction of severe systemic ventricle (morphologic right ventricle) atrio-ventricular valve (tricuspid valve) regurgitation. Cardiac magnetic resonance imaging (CMR) and transesophageal imaging (TEE) demonstrated severe systemic ventricle (morphologic right ventricle) contractile dysfunction, as well as dynamic non-systemic ventricle (morphologic left ventric... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3315746 Fri, 26 Feb 2010 16:44:14 +0100 3315746 http://www.medworm.com/index.php?rid=3315747&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fnrt776g6w1572083%2F Abstract  Volumetric radiofrequency-based intravascular ultrasound (RF–IVUS) data of coronary segments are increasingly used as endpoints in serial trials of novel anti-atherosclerotic therapies. In a relatively time-consuming process, vessel and lumen contours are defined; these contours are first automatically detected, then visually checked, and finally (in most cases) manually edited to generate reliable volumetric data of vessel geometry and plaque composition. Reduction in number of cross-sectional images for volumetric analysis could save analysis time but may also increase measurement variability of volumetric data. To assess whether a 50% reduction in number of frames per segment (every second frame) alters the reproducibility of volumetric measurements, we perfo... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3315747 Fri, 26 Feb 2010 09:43:41 +0100 3315747 http://www.medworm.com/index.php?rid=3313577&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fk040jq1570204328%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-010-9604-5Authors Thomas Hellmut Schindler, University Hospitals of Geneva Department of Internal Medicine, Cardiovascular Center, 6th Floor, Nuclear Cardiology Rue Gabrielle-Perret-Gentil 4 1211 Geneva Switzerland Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3313577 Thu, 25 Feb 2010 07:58:52 +0100 3313577 http://www.medworm.com/index.php?rid=3309770&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F0vx8kvl536mk438q%2F Content Type Journal ArticleCategory Case-In-PointDOI 10.1007/s10554-010-9605-4Authors Mi-Seung Shin, Gachon University Gil Medical Center Division of Cardiology, Department of Internal Medicine Incheon KoreaYon Mi Sung, Gachon University Gil Medical Center Department of Radiology Incheon KoreaBong Roung Kim, Seoul Medical Center Department of Internal Medicine 171-1, Samsung-dong Kangnam-gu, Seoul 135-740 Korea Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3309770 Wed, 24 Feb 2010 06:53:50 +0100 3309770 http://www.medworm.com/index.php?rid=3296874&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F95521881g1548vn7%2F Abstract  To compare a quantitative assessment of contrast cardiovascular magnetic resonance (CMR) after ST-segment elevation myocardial infarction (STEMI) with visual analysis for predicting depressed ejection fraction (dEF) and major adverse cardiac events (MACE). 192 patients underwent CMR at 1 week and 6 months after STEMI. Three quantitative (initial slope, maximal signal intensity and contrast delay in first-pass imaging) and 2 visual perfusion indexes (hypoenhancement in first-pass and microvascular obstruction in late enhancement imaging (LE)) were determined. Quantification of infarct mass and visual assessment of the extent of transmural necrosis (ETN) were also performed. At 6 months, 69 patients displayed dEF. During follow-up (mean 655 days) ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3296874 Sat, 20 Feb 2010 06:55:48 +0100 3296874 http://www.medworm.com/index.php?rid=3274675&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F0635471124628656%2F Abstract  CAD is the main cause of morbidity and mortality in diabetic patients; we need reliable clinical parameters to stratify cardiovascular risk in these patients. We thus assessed prognostic value of clinical parameters, rest and stress echocardiographic data in diabetic patients, with known or suspected CAD. We studied 322 type 2 diabetic patients, who underwent dobutamine stress echocardiography (DSE) for known or suspected CAD; for prognostic assessment, end-points were all-cause mortality and hard cardiac events (cardiac death and non fatal myocardial infarction). During DSE, viability and inducible ischemia developed in 65 (20%) and 192 (60%) subjects, respectively; a severe ischemia (an asynergic area including more than 40% of all segments combined with a rate ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3274675 Sun, 14 Feb 2010 06:51:51 +0100 3274675 http://www.medworm.com/index.php?rid=3270701&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fgu24030405q0n5u6%2F Content Type Journal ArticleCategory EDITORIAL COMMENTDOI 10.1007/s10554-010-9597-0Authors E. E. van der Wall, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsM. J. Schalij, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsA. van der Laarse, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. J. Bax, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3270701 Thu, 11 Feb 2010 11:46:08 +0100 3270701 http://www.medworm.com/index.php?rid=3265391&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fl883t13k6128l0u5%2F Abstract  The purpose of the study was to demonstrate the accuracy and clinical utility of an automated method of image analysis of 4D (3D + time) magnetic resonance (MR) imaging of the human aorta. Serial MR images of the entire thoracic aorta were acquired on 32 healthy individuals. Graph theory based segmentation was applied to the images and cross sectional area (CSA) was determined for the entire length of thoracic aorta. Mean CSA was compared between the 3 years. CSA values at the level of sinuses of Valsalva and sino-tubular junction were used to calculate average diameters for comparison to Roman-Devereux norms. A robust automated segmentation method was developed that accurately reproduced CSA measurements for the entire length of thoracic aorta in s... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3265391 Wed, 10 Feb 2010 06:49:17 +0100 3265391 http://www.medworm.com/index.php?rid=3265392&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fmn277048p6610870%2F Abstract  To prospectively compare the diagnostic performance of low-dose computed tomography coronary angiography (CTCA) and cardiac magnetic resonance imaging (CMR) and combinations thereof for the diagnosis of significant coronary stenoses. Forty-three consecutive patients with known or suspected coronary artery disease underwent catheter coronary angiography (CA), dual-source CTCA with prospective electrocardiography-gating, and cardiac CMR (1.5 Tesla). The following tests were analyzed: (1) low-dose CTCA, (2) adenosine stress-rest perfusion-CMR, (3) late gadolinium enhancement (LGE), (4) perfusion-CMR and LGE, (5) low-dose CTCA combined with perfusion-CMR, (5) low-dose CTCA combined with late gadolinium-enhancement, (6) low-dose CTCA combined with perfusion-CMR an... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3265392 Tue, 09 Feb 2010 17:47:00 +0100 3265392 http://www.medworm.com/index.php?rid=3257290&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F2u035m753821j29v%2F Abstract  Pulmonary arterial hypertension (PAH) is a life-threatening condition characterized by progressive elevation in pulmonary artery pressure (PAP) and total pulmonary vascular resistance (TPVR). Recent advances in imaging techniques have allowed the development of new echocardiographic parameters to evaluate disease progression. However, there are no reports comparing the diagnostic performance of these non-invasive parameters to each other and to invasive measurements. Therefore, we investigated the diagnostic yield of echocardiographically derived TPVR and Doppler parameters of PAP in screening and measuring the severity of PAH in a rat model. Serial echocardiographic and invasive measurements were performed at baseline, 21 and 35 days after monocrotaline-indu... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3257290 Sat, 06 Feb 2010 08:22:08 +0100 3257290 http://www.medworm.com/index.php?rid=3248137&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fg15w078774367884%2F In conclusion: RT3DE is comparable to 2DE for the assessment of the intracardiac thrombi and provided more detailed information beyond the scope of the established 2DE. Content Type Journal ArticleCategory Original PaperDOI 10.1007/s10554-010-9593-4Authors Ashraf Mohammed Anwar, King Fahd Armed Forces Hospital Cardiology Department P.O. Box: 9862 Jeddah 21159 Kingdom of Saudi ArabiaYoussef F. M. Nosir, King Fahd Armed Forces Hospital Cardiology Department P.O. Box: 9862 Jeddah 21159 Kingdom of Saudi ArabiaAref Ajam, King Fahd Armed Forces Hospital Cardiology Department P.O. Box: 9862 Jeddah 21159 Kingdom of Saudi ArabiaHassan Chamsi-Pasha, King Fahd Armed Forces Hospital Cardiology Department P.O. Box: 9862 Jeddah 21159 Kingdom of Saudi Arabia Journal The International Journal... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3248137 Thu, 04 Feb 2010 06:59:52 +0100 3248137 http://www.medworm.com/index.php?rid=3242124&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F5527v3u444563927%2F Abstract  In patients with large total blood volume contrast material (CM) dilution decreases coronary attenuation in CT coronary angiography (CTCA). As increased blood volume is well paralleled by body surface area (BSA) we assessed a BSA-adapted CM protocol to compensate for dilution effects. Low-dose CTCA with prospective ECG-triggering was performed in 80 patients with a BSA-adapted CM bolus ranging 40–105 ml and injection rate ranging 3.5–5.0 ml/s for a BSA of <1.70 to ≥2.5 m2. Eighty control patients matched for BSA who had previously undergone routine CTCA with a fixed CM protocol of 80 ml at 5 ml/s served as reference group. The average vessel attenuation from the proximal right (RCA) and the left main coronary artery (LMA) was asses... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3242124 Wed, 03 Feb 2010 17:58:32 +0100 3242124 http://www.medworm.com/index.php?rid=3234101&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F1w6tv42p71520120%2F Abstract  Tissue Doppler imaging (TDI) can detect myocardial dysfunction related to iron load in patients with beta-thalassemia major (TM). We aimed to assess the efficacy of pulsed-wave TDI (PW-TDI) in predicting myocardial iron load in patients with TM using T2* magnetic resonance (MR) as the gold-standard non-invasive diagnostic test. 33 asymptomatic TM patients, mean aged 18 ± 6 years (6–31) with normal left ventricular (LV) global systolic function were evaluated by conventional echocardiography and PW-TDI. Results were compared with 20 age and sex-matched controls. TDI measures included myocardial systolic (Sm), early (Em) and late (Am) diastolic velocities at basal and middle segments of septal and lateral LV wall. Myocardial iron deposition were me... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3234101 Mon, 01 Feb 2010 18:07:42 +0100 3234101 http://www.medworm.com/index.php?rid=3234103&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F5232057x0064n07w%2F Abstract  Widespread use of echocardiography has contributed to more frequent recognition of takotsubo stress cardiomyopathy. Initial presentation is similar to acute coronary syndrome and the acute course can be complicated by heart failure, arrhythmias, dynamic left ventricular outflow tract obstruction, hypotension and death. We briefly review the clinical presentation and propose a unified diagnostic algorithm for cardiologists acutely managing this cardiac emergency. We highlight the central role of echocardiography and emphasize the nuances of this peculiar acute cardiomyopathy from an echocardiographers’ perspective. Content Type Journal ArticleCategory ReviewDOI 10.1007/s10554-010-9590-7Authors Anand Chockalingam, University of Missouri Division of Cardiovascul... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3234103 Mon, 01 Feb 2010 06:47:21 +0100 3234103 http://www.medworm.com/index.php?rid=3234102&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fmpk7830237134821%2F Abstract  Interpolation artifact is known to occur when the heart rate is decreased lower than the critical value for the specific pitch. The purpose of our study is to determine the minimum heart rate (minHR) for the specific pitch that provides images without interpolation artifact when using dual-source computed tomography (DSCT). We scanned the ‘thin slice thickness block’ of the CT performance phantom provided by the American Association of Physicists in Medicine using DSCT for variable pitches. Change in heart rate was simulated through ECG editing by changing R–R interval. Axial, sagittal, and coronal image sets were reconstructed and assessed for the presence and extent of interpolation artifact. MinHR at which no interpolation artifact was detected for each p... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3234102 Mon, 01 Feb 2010 06:47:21 +0100 3234102 http://www.medworm.com/index.php?rid=3230000&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F85401858623um35t%2F Abstract  Atherosclerotic plaque disruption accounts for the major part of cardiovascular mortality and the risk of disruption appears to depend on plaque composition. Carotid plaques in patients, scheduled for endarterectomy, have been successfully characterised with MRI. MRI has the advantage of combining information about morphology and function. Unfortunately, the tortuosity and size of the coronary arteries, and the respiratory and cardiac motion hinder the in vivo characterisation of human coronary plaque. In addition to plaque composition several molecular markers of the different processes involved in atherosclerosis, such as integrins, matrix metalloproteinases and fibrin seem to correlate with risk of plaque rupture and clinical outcome. These molecular markers ca... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3230000 Fri, 29 Jan 2010 12:20:15 +0100 3230000 http://www.medworm.com/index.php?rid=3224268&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F3621154218374143%2F Abstract  Longitudinal myocardial function (LMF) may be impaired while systolic function is still normal. We investigated relationship between LMF and hypertensive organ damage in newly diagnosed stage I hypertensive patients. A total of 57 patient with never treated stage I hypertension and 48 matched healthy control subject were enrolled in the study. Conventional 2-D, Doppler and tissue wave Doppler imaging (TDI) echocardiography were used. LMF was evaluated by the septal and lateral strain (S) and strain rate (SR) measurements. Hypertensive complications were evaluated by the urine microalbumin levels and retinal examination. A multivariate regression analysis was perfomed to assess the relation between the variables. Ejection fraction, mid-wall fractional shortenning, ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3224268 Thu, 28 Jan 2010 18:03:45 +0100 3224268 http://www.medworm.com/index.php?rid=3224269&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fk271x860312628l4%2F Abstract  Methods to index left ventricular (LV) mass, measured by cardiovascular magnetic resonance (CMR), for body size have not been investigated. The purposes of this study were to develop allometric indices for LV mass measured by CMR and compare estimates of the prevalence and predictive value of LV hypertrophy defined by a new allometric height-weight index, LV mass/body surface area (BSA), height indices (a new allometric height index; and previously derived indices from echocardiographic measurements: LV mass/height2, LV mass/height2.7), and non-indexed LV mass. 5,004 participants from the Multi-Ethnic Study of Atherosclerosis (MESA) with CMR measurements of LV mass and no clinical cardiovascular disease at baseline were followed for a median of 4.1 years. The ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3224269 Wed, 27 Jan 2010 19:55:48 +0100 3224269 http://www.medworm.com/index.php?rid=3224270&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft13nq27330t50g16%2F Abstract  A 68-year-old man was admitted with intermittent chest tightness. Coronary angiography revealed subtotal occlusion of right coronary artery (RCA). After successful stenting from middle to proximal RCA with two Cypher stents, angiography showed a “Rolling filling defect” at distal aneurysmal dilatation of RCA. Intravascular ultrasound (IVUS) confirmed the “Rolling filling defect” as a trapped air bubble just in RCA distal aneurysm. By using a 2.5 × 20 mm balloon anchoring at distal RCA, a 5Fr. ST01 catheter was advanced into distal RCA and aspirated the “Rolling filling defect” successfully. The case highlights the importance of preventing iatrogenic trapped air bubble in usual daily practice. Once it happens, several devices may utilize for ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3224270 Wed, 27 Jan 2010 19:55:47 +0100 3224270 http://www.medworm.com/index.php?rid=3207102&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fd3041832h1103074%2F This report describes a case of aortic regurgitation that was caused by iatrogenic aortic valve leaflet perforation, and this occurred in a 22-year-old woman who underwent repair of a ventricular septal defect (VSD) 15 years previously. Transthoracic echocardiography (TTE) showed a defect located at the aortic annulus close to the infundibular septum on a two-dimensional echocardiographic study and we observed an eccentric jet flow into the left ventricle in early diastole on the continuous wave and color flow Doppler studies. A small perforation in the body of the right aortic cusp and mild to moderate aortic regurgitation were confirmed by the use of transesophageal echocardiography (TEE) and ascending aortography. Content Type Journal ArticleCategory Case ReportDOI 10.1007/... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3207102 Sat, 23 Jan 2010 07:46:22 +0100 3207102 http://www.medworm.com/index.php?rid=3207103&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F03338627p1618171%2F This report is expected to have a significant impact on the clinical practice, research and reimbursement policy in Asia. Content Type Journal ArticleCategory GuidelineDOI 10.1007/s10554-009-9577-4Authors ASCI CCT & CMR Guideline Working GroupI-Chen Tsai, Taichung Veterans General Hospital Department of Radiology Taichung TaiwanByoung Wook Choi, Yonsei University Health System Department of Radiology, Research Institute of Radiological Science, Severance Hospital Seoul KoreaCarmen Chan, Queen Mary Hospital Division of Cardiology, Department of Medicine Hong Kong ChinaMasahiro Jinzaki, Keio University School of Medicine Department of Diagnostic Radiology Tokyo JapanKakuya Kitagawa, Mie University School of Medicine Department of Diagnostic Radiology Mie JapanHwan Seok Yong, Korea Univ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3207103 Fri, 22 Jan 2010 09:53:47 +0100 3207103 http://www.medworm.com/index.php?rid=3207104&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fr8238t07j538024j%2F This study evaluates the hypothesis that the use of PET imaging in the decision-making process for CABG will improve postoperative patient survival. We reviewed 476 patients with ischemic cardiomyopathy (LV ejection fraction ≤0.35) who were considered candidates for CABG between 1994 and 2004 on the basis of clinical presentation and angiographic data. In a Standard Care Group, 298 patients underwent CABG. In a second PET-assisted management group of 178 patients, 152 patients underwent CABG (PET-CABG) and 26 patients were excluded from CABG because of lack of viability (PET-Alternatives). Primary endpoint was postoperative survival. There were two in hospital deaths in the PET-CABG (1.3%) and 30 (10.1%) in the Standard Care Group (P = 0.018). The survival rate after 1, 5... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3207104 Thu, 21 Jan 2010 11:06:39 +0100 3207104 http://www.medworm.com/index.php?rid=3207105&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fqh178483m6r5611l%2F Content Type Journal ArticleCategory ErratumDOI 10.1007/s10554-010-9582-7Authors Yen-Ting Lin, Taichung Veterans General Hospital Department of Radiology Taichung TaiwanI-Chen Tsai, Taichung Veterans General Hospital Department of Radiology Taichung TaiwanWei-Lin Tsai, Taichung Veterans General Hospital Department of Radiology Taichung TaiwanTain Lee, Lee’s General Hospital, Lee’s Medical Corporation Taichung TaiwanMin-Chi Chen, Taichung Veterans General Hospital Department of Radiology Taichung TaiwanPao-Chun Lin, Taichung Veterans General Hospital Department of Radiology Taichung TaiwanSi-Wa Chan, Taichung Veterans General Hospital Department of Radiology Taichung Taiwan Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3207105 Thu, 21 Jan 2010 11:06:35 +0100 3207105 http://www.medworm.com/index.php?rid=3177867&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fw002nt47157x71t2%2F Abstract  The purpose of this study was to assess the performance of 0.5 versus 3.0 mm slice reconstructions in depicting coronary calcium with special attention to patients having zero calcium scores at 3.0 mm reconstructions by using computed tomography (CT). Imaging was performed by volumetric 320-detector row CT. Scans of 100 patients with a negative and 100 patients with a positive Agatston score at 3.0 mm reconstructions were consecutively selected. Non-overlapping volume sets with 3.0 and 0.5 mm slice thickness were reconstructed from the same raw data and Agatston and volume scores were obtained. The Wilcoxon signed ranks test was used to determine statistical differences between 3.0 and 0.5 mm calcium scores. Agatston and volume scores obtai... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3177867 Wed, 13 Jan 2010 17:54:49 +0100 3177867 http://www.medworm.com/index.php?rid=3162299&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F23g4471339018607%2F Abstract  Although previous intravascular ultrasound (IVUS) radiofrequency-based analysis data showed acceptable reproducibility for plaque composition, measurements are not easily obtained, particularly that of lumen contour, because of the limited IVUS resolution. The purpose of this study was to compare a new measurement method (Shin’s method) and the conventional measurement method for necrotic core and calcium content in atherosclerotic lesions using Virtual Histology-intravascular ultrasound (VH-IVUS). Fifty-seven patients with unstable angina who underwent elective percutaneous coronary intervention were included. Shin’s method focuses on catheter contour, instead of lumen contour, and vessel contour. Patients ages ranged from 46 to 88 years, and 34 were men... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3162299 Fri, 08 Jan 2010 21:40:51 +0100 3162299 http://www.medworm.com/index.php?rid=3162300&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa56742n2262314rm%2F This study was designed to unravel, for the first time, the impact of the global washout rate (WR) of 123I-β-methyl-p-iodophenylpentadecanoic acid (BMIPP) on the recovery of LV function following AMI, as evidenced from conventional echocardiography. Twenty consecutive patients (age: 58 ± 13 years; 16 males and 4 females) with ST-segment elevation myocardial infarction (STEMI) were enrolled and all of them underwent successful percutaneous coronary intervention (PCI). 123I-BMIPP cardiac scintigraphy was performed at 7 ± 3 days after admission. The WR was calculated from the polar map and the regional BMIPP defect score was calculated using a 17 segment model. Echocardiography was performed within 24 h of admission and at 3 months to record the... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3162300 Fri, 08 Jan 2010 09:15:22 +0100 3162300 http://www.medworm.com/index.php?rid=3162301&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F263722282u110037%2F Abstract  Atherosclerotic plaque disruption accounts for the major part of cardiovascular mortality and the risk of disruption appears to depend on plaque composition. Carotid plaques in patients, scheduled for endarterectomy, have been successfully characterised with MRI. MRI has the advantage of combining information about morphology and function. Unfortunately, the tortuosity and size of the coronary arteries, and the respiratory and cardiac motion hinder the in vivo characterisation of human coronary plaque. In addition to plaque composition several molecular markers of the different processes involved in atherosclerosis, such as integrins, matrix metalloproteinases and fibrin seem to correlate with risk of plaque rupture and clinical outcome. These molecular markers ca... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3162301 Fri, 08 Jan 2010 09:15:16 +0100 3162301 http://www.medworm.com/index.php?rid=3162302&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F0882032521333048%2F This article reviews the recent advances in image acquisition and quantitative image analysis in CMR. Content Type Journal ArticleCategory ReviewDOI 10.1007/s10554-009-9571-xAuthors Anil K. Attili, University of Kentucky Department of Radiology and Cardiology 800 Rose Street Room HX-315B Lexington KY 40536 USAAndreas Schuster, St. Thomas’ Hospital King’s College London BHF Centre of Excellence, Division of Imaging Sciences, NIHR Biomedical Research Centre at Guy’s and St. Thomas’ NHS Trust Foundation, The Rayne Institute, 4th Floor Lambeth Wing London SE1 7EH UKEike Nagel, St. Thomas’ Hospital King’s College London BHF Centre of Excellence, Division of Imaging Sciences, NIHR Biomedical Research Centre at Guy’s and St. Thomas’ NHS Trust Foundation, The Rayne Institute,... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3162302 Thu, 07 Jan 2010 22:23:30 +0100 3162302 http://www.medworm.com/index.php?rid=3162303&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp228411851472x44%2F Abstract  With the introduction of 64-slice CT and dual-source CT technology, coronary CT angiography (CCTA) has emerged as a useful diagnostic imaging modality for the noninvasive assessment of coronary heart disease. Recently, the risks associated with ionizing radiation on CT have raised serious concerns. The main concern of exposure to ionizing radiation is the potential risk of cancer. CCTA involves much higher radiation dose with the advances in the spatial and temporal resolution of cardiac CT. Currently, various dose-saving algorithms, such as ECG (electrocardiography)-based dose modulation, reduced tube voltage, and prospective ECG gating, high-pitch helical scanning are available to lower radiation exposure during cardiac CT. Therefore, careful selection of CT sca... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3162303 Thu, 07 Jan 2010 22:23:29 +0100 3162303 http://www.medworm.com/index.php?rid=3162304&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Flj087056815w5220%2F Abstract  We wanted to assess the performance of dual-source CT (DSCT) for evaluating the left atrial volume and function and we compared this performance to that of the standard reference technique, cardiac cine MR (CMR). Fifty-one patients who were referred for CT coronary angiography were included in the study. Two were subsequently excluded for having un-analyzable MR images at the onset of left atrial contraction. For the remaining 49 patients, the DSCT data sets and FIESTA (fast imaging employing steady-state acquisition) cines of the vertical long axis covering the left atrium and the short axis covering the left ventricle were obtained on the same day. All the images were analyzed to obtain the maximal left atrial volume (LAVmax), the minimal left atrial volume (LAV... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3162304 Thu, 07 Jan 2010 15:58:32 +0100 3162304 http://www.medworm.com/index.php?rid=3155201&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fl464120wq31187n0%2F This study showed that superficial calcification is an important factor for determination of instability of atherosclerotic carotid plaque. The shape and location of superficial calcification are important features associated with the occurrence of intraplaque hemorrhage. Content Type Journal ArticleCategory Original PaperDOI 10.1007/s10554-009-9578-3Authors Xian Xu, Chinese PLA General Hospital Department of Radiology #28 Fuxing Road 100853 Beijing ChinaHaiyue Ju, Chinese PLA General Hospital Department of Radiology #28 Fuxing Road 100853 Beijing ChinaJianming Cai, Chinese PLA General Hospital Department of Radiology #28 Fuxing Road 100853 Beijing ChinaYouquan Cai, Chinese PLA General Hospital Department of Radiology #28 Fuxing Road 100853 Beijing ChinaXinjiang Wang, Chinese PLA Ge... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3155201 Tue, 05 Jan 2010 17:02:02 +0100 3155201 http://www.medworm.com/index.php?rid=3155202&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fcq74q758t632u7g8%2F Abstract  The present study investigated whether IVUS could serve as a reliable reference in validating MDCT characterization of coronary plaque against a histological gold standard. Twenty-one specimens were postmortem human coronary arteries. Coronary cross-sections were imaged by 40 MHz IVUS and by 64-slice MDCT and characterized histologically as presenting calcified, fibrous or lipid-rich plaques. Plaque composition was analyzed visually and intra-plaque MDCT attenuation was measured in Hounsfield Units (HU). 83 atherosclerotic plaques were identified. IVUS failed to characterize calcified plaque accurately, with a positive predictive value (ppv) of 75% versus 100% for MDCT. Lipid-rich plaque was even less accurately characterized, with ppv of 60 and 68% for IVUS ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3155202 Tue, 05 Jan 2010 17:02:01 +0100 3155202 http://www.medworm.com/index.php?rid=3155203&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F3302932x34451639%2F Abstract  Cardiac involvement is the main cause of morbidity and mortality in hypereosinophilic syndrome. In a patient with hypereosinophilia and a normal echocardiography, cardiac magnetic resonance imaging (CMR) helped confirm early cardiac involvement by demonstrating a typical pattern of left ventricular subendocardial and papillary muscle involvement. The use of CMR facilitated prompt institution of aggressive therapy and was useful in monitoring response to treatment. Content Type Journal ArticleCategory Case ReportDOI 10.1007/s10554-009-9580-9Authors Jen Li Looi, Middlemore Hospital Department of Cardiology Private Bag 933111 Otahuhu, Auckland New ZealandPeter Ruygrok, Green Lane Cardiovascular Service, Auckland City Hospital 2 Park Road Grafton, Auckland 1023 New ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3155203 Tue, 05 Jan 2010 06:49:52 +0100 3155203 http://www.medworm.com/index.php?rid=3155204&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F63q33126845p1364%2F Abstract  To evaluate the diagnostic accuracy of dual-source CT coronary angiography for detecting coronary artery stenosis. From February 2008 to January 2009, dual-source CT coronary CT angiography (DSCT-CCTA) and conventional coronary angiography (CAG) were both performed in 84 patients who had either clinical symptoms or a high risk of coronary artery disease. The diagnostic accuracy of DSCT-CCTA was evaluated by comparing it with that of CAG, which was regarded as the gold standard for making the diagnosis of coronary artery disease. Occlusion or stenosis of various degrees was revealed by DSCT-CCTA in 244 segments of 84 patients. Compared to CAG, segment-based sensitivity, specificity, positive predictive value and negative predictive value of DSCT-CCTA were 97.4, 97.... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3155204 Mon, 04 Jan 2010 17:59:43 +0100 3155204 http://www.medworm.com/index.php?rid=3155205&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F6778812827680887%2F Abstract  To determine the prognosis of a myocardial scar assessed by a late gadolinium enhancement (LGE) technique of cardiac magnetic resonance (CMR) in hypertensive patients with known or suspected coronary artery disease (CAD). Patients with systemic hypertension with known or suspected CAD without a clinical history of myocardial infarction were enrolled. All patients underwent CMR for assessment of cardiac function and LGE. Prognostic data was determined by the occurrence of a hard cardiac endpoint, defined as cardiac death or a non-fatal myocardial infarction, or major adverse cardiac events (MACEs), defined as cardiac death, a non-fatal myocardial infarction, or hospitalization due to heart failure, unstable angina, or life-threatening ventricular arrhythmia. A tota... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3155205 Mon, 04 Jan 2010 17:59:41 +0100 3155205 http://www.medworm.com/index.php?rid=3136355&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F860774w40g1741vv%2F Abstract  We wanted to compare the image quality and radiation dose of retrospective versus prospective ECG-gated dual-source CT imaging in pediatric patients with congenital heart diseases. We retrospectively evaluated 44 thorax CT images that were obtained using two different protocols (retrospective helical ECG-gated [n = 22] versus prospective non-helical ECG-triggering [n = 22]) in patients younger than 5 years. Two radiologists evaluated the image quality, using a 3- or 4-point scale, in terms of the degree of homogeneity of vascular enhancement, the stair-step artifacts, the subjective image noise and the overall subjective image quality. We compared the mean score of image quality, the frequency of marked stair-step artifact and the estimated... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3136355 Thu, 31 Dec 2009 16:46:03 +0100 3136355 http://www.medworm.com/index.php?rid=3134881&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F4808h51777718156%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9557-8Authors Clemens von Birgelen, Medisch Spectrum Twente Thoraxcentrum Twente, Department of Cardiology Haaksbergerstraat 55 7513 ER Enschede The NetherlandsJennifer Huisman, Medisch Spectrum Twente Thoraxcentrum Twente, Department of Cardiology Haaksbergerstraat 55 7513 ER Enschede The NetherlandsMarc Hartmann, Medisch Spectrum Twente Thoraxcentrum Twente, Department of Cardiology Haaksbergerstraat 55 7513 ER Enschede The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3134881 Wed, 30 Dec 2009 16:46:55 +0100 3134881 http://www.medworm.com/index.php?rid=3134882&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F3h22443581637k25%2F Abstract  Recently, CT pulmonary angiography (CTPA), especially performed with multi-detector row CT, has become a key imaging modality for pulmonary embolism. However, CTPA that was performed under clinical suspicion of pulmonary embolism has been shown to lead to high prevalence of alternative diagnosis, up to 25.4%. A comprehensive evaluation of pulmonary and extrapulmonary abnormalities including cardiovascular lesions is critical in proper diagnosis and patient care. Radiologists should be familiar with the comprehensive interpretation of CTPA to facilitate differential diagnosis and further treatment decision. Content Type Journal ArticleCategory Pictorial EssayDOI 10.1007/s10554-009-9573-8Authors Yen-Ting Lin, Taichung Veterans General Hospital Taichung TaiwanI-Ch... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3134882 Wed, 30 Dec 2009 06:47:55 +0100 3134882 http://www.medworm.com/index.php?rid=3132098&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp082644350018425%2F Abstract  We evaluate the systemic right ventricle (SRV) failure of congenitally corrected transposition of the great arteries using the scintigraphic studies in a case with 32-year-old male who improved the heart failure by the use of beta-adrenergic blockers. The myocardial perfusion sympathetic nervous system activity mismatch with preserved coronary flow and wall thickness indicates a distinctive feature as SRV cardiomyopathy, suggesting the importance of recovery of SRV sympathetic dysfunction for improving the prognosis. Content Type Journal ArticleCategory Case in PointDOI 10.1007/s10554-009-9564-9Authors Yasushi Akutsu, Showa University School of Medicine Division of Cardiology, Department of Medicine 1-5-8 Hatanodai Shinagawaku, Tokyo 142-8666 JapanKyouichi Kane... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3132098 Tue, 29 Dec 2009 17:59:30 +0100 3132098 http://www.medworm.com/index.php?rid=3132099&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fxq8122428h48g66k%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9556-9Authors Haisam Ismail, North Shore University Hospital Department of Cardiology 300 Community Drive Manhasset NY 11030 USAAmgad N. Makaryus, North Shore University Hospital Department of Cardiology 300 Community Drive Manhasset NY 11030 USA Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3132099 Tue, 29 Dec 2009 17:59:28 +0100 3132099 http://www.medworm.com/index.php?rid=3132100&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F741201482040840k%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9560-0Authors E. E. van der Wall, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsM. J. Schalij, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. J. Bax, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3132100 Tue, 29 Dec 2009 06:57:19 +0100 3132100 http://www.medworm.com/index.php?rid=3132102&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fe4530v44u5rg0n74%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9561-zAuthors Ron Blankstein, Harvard Medical School Department of Medicine (Cardiovascular Division), Brigham and Women’s Hospital 75 Francis Street, Room Shapiro 5096 Boston MA 02115 USA Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3132102 Tue, 29 Dec 2009 06:57:17 +0100 3132102 http://www.medworm.com/index.php?rid=3132101&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fn134363nt888p42r%2F Abstract  An asymptomatic 35-year-old woman with history of coarctation repair underwent routine echo. This showed a bicuspid aortic valve with a significant gradient in the left ventricular outflow tract (LVOT). The anterior mitral valve leaflet appeared redundant. Transoesophageal echo showed thickened chordae tendineae from both mitral valve leaflets inserted into a single postero-medial papillary muscle—a parachute mitral valve. During systole, there was anterior motion of redundant mitral chordae into the LVOT producing significant obstruction. A diagnosis of partial Shone complex was made. She was referred for mitral (and possibly aortic) valve surgery. The combination of aortic coarctation with bicuspid aortic valve should stimulate a search for other levels of sys... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3132101 Tue, 29 Dec 2009 06:57:17 +0100 3132101 http://www.medworm.com/index.php?rid=3132103&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fw410m41897760p7k%2F This study was designed to measure the pixel-by-pixel flow velocity and shear stress from phase-contrast MR images. An optimized method was suggested and the use of the method was confirmed. A self-developed, straight steady flow model system was scanned by MRI with a velocity-encoded phase-contrast sequence. In-house developed software was used for the pixel-by-pixel flow velocity and shear stress measurements and the measurements were compared with physically measured mean velocity and shear stress. A comparison between the use of the in-house velocimetry software and a commercial velocimetry system was also performed. Curved steady flow models were scanned by phase-contrast MRI. Subsequently, velocity and shear stress were measured to confirm the shifted peak flow velocity and she... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3132103 Tue, 29 Dec 2009 06:57:15 +0100 3132103 http://www.medworm.com/index.php?rid=3122918&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fy176j76x633p7633%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9559-6Authors E. E. van der Wall, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. D. Schuijf, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. J. Bax, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. W. Jukema, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsM. J. Schalij, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The Internation... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3122918 Thu, 24 Dec 2009 19:48:06 +0100 3122918 http://www.medworm.com/index.php?rid=3122919&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fx7171m4702102tp1%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9558-7Authors Michael Rees, Bangor University School of Medical Sciences Brigantia Building, Penrallt Road Bangor, Gwynedd Wales LL57 2AS UK Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3122919 Thu, 24 Dec 2009 19:48:04 +0100 3122919 http://www.medworm.com/index.php?rid=3121725&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fg527728135798305%2F Abstract  We sought to determine the cut-off point of the average heart rate (HR) and HR differences in obtaining diagnostic image quality using prospective electrocardiographically-triggered (PT) coronary computed tomographic angiography (CCTA) and to compare image quality and radiation dose for CCTA obtained with PT CCTA and retrospective electrocardiographically-gated (RG) CCTA. A total of 178 patients who were referred for CCTA were enrolled in the study. Two independent radiologists evaluated subjective image quality. The non-diagnostic coronary segments were 32 of 1,226 segments (2.6%) for PT CCTA and 12 of 1,346 segments (0.9%) for RG CCTA (P < 0.001). The mean image quality scores for PT CCTA and RG CCTA were 3.82 ± 0.29 and 3.93 ± ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3121725 Wed, 23 Dec 2009 22:57:25 +0100 3121725 http://www.medworm.com/index.php?rid=3121726&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F7342p1j817371004%2F Abstract  Although progress has been made to understand the factors for non-responsiveness, fine tuning and comprehensive strategies are needed to make echocardiography the GPS system in cardiac resynchronization. Taking the wrong turn in the labyrinth of dyssynchrony is expensive and time consuming without improving well being of the heart failure patient. Possibly other imaging techniques could help in fine tuning cardiac resynchronization. Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9555-xAuthors Leo H. B. Baur, University of Maastricht Department of Cardiology, Atrium Medical Centre Parkstad Henri Dunantstreet 5 6401 CX Heerlen The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3121726 Wed, 23 Dec 2009 22:57:22 +0100 3121726 http://www.medworm.com/index.php?rid=3121727&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F72984m1751031347%2F We report here on three fetal cases of double aortic arch and their outcomes. These malformations presented as an isolated right aortic arch or as a typical vascular ring form on the prenatal echocardiography that was obtained between 22 and 24 weeks gestation. In two of the three patients, the major intracardiac anomaly was a ventricular septal defect, and this was associated with the aortic malformation. A more detailed evaluation of the branching pattern of the aorta, and particularly whether the aorta gives off a left-sided limb of the double arch, could suggest the diagnosis of a double aortic arch in utero. Two patients underwent successful surgical correction and they showed good clinical outcomes. Fetal double aortic arch can be prenatally suspected after performing feta... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3121727 Wed, 23 Dec 2009 22:57:21 +0100 3121727 http://www.medworm.com/index.php?rid=3106203&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa7384px6150v38r2%2F This study aimed to compare the effects of the automated and manual methods for determining the optimal phase of image reconstruction with the use of 64-slice coronary CT angiography (CCTA). In 63 patients, the optimal trigger delay was determined using an automated technique (PhaseXact) and by manual phase selection from the images reconstructed at a 10 ms and 1% increment of the R–R interval. The image quality was evaluated using four-step grading. The mean heart rate in all the patients was 70 ± 10.1 bpm (range: 52–98 bpm). The frequency of obtaining diagnostic quality images was highest with the manual absolute timing method (97.6% of 753 segments), while it was 94.7% with manual relative timing and 91.9% with an automated method. The mean image qual... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3106203 Fri, 18 Dec 2009 07:14:44 +0100 3106203 http://www.medworm.com/index.php?rid=3087855&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F98uv78t107073242%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9552-0Authors E. E. van der Wall, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. D. Schuijf, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. J. Bax, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. W. Jukema, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsM. J. Schalij, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The Internation... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3087855 Sat, 12 Dec 2009 14:19:22 +0100 3087855 http://www.medworm.com/index.php?rid=3087856&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fk14x755886112720%2F Abstract  To evaluate the consequences of chronic non-occlusive coronary artery (CA) stenosis on myocardial function, perfusion and viability, we developed a closed-chest, closed-pericardium pig model, using magnetic resonance imaging (MRI) as quantitative imaging tool. Pigs underwent a percutaneous copper-coated stent implantation in the left circumflex CA (n = 19) or sham operation (n = 5). To evaluate the occurrence of myocardial infarction, cardiac troponin I (cTnI) levels were repetitively measured. At week 6, CA stenosis severity was quantified with angiography and cine, first-pass and contrast-enhanced MRI were performed to evaluate cardiac function, perfusion and viability. In the stenting group, cTnI values significantly increased at day 3 and da... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3087856 Thu, 10 Dec 2009 15:20:35 +0100 3087856 http://www.medworm.com/index.php?rid=3087857&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Faj112t11242375j5%2F Abstract  Rheumatic mitral valve disease being common in India, valve replacement and hence thrombosis of prosthetic heart valves (PHV) are not uncommon. The diagnosis is commonly established by increased gradients across PHV during transthoracic echo and restricted leaflet movement during transesophageal echo or fluoroscopy. We demonstrated both the leaflets of a thrombosed PHV,of which one was stuck in closed position by real-time three-dimensional transesophageal echocardiography. Content Type Journal ArticleCategory Case in PointDOI 10.1007/s10554-009-9548-9Authors Biswajit Paul, Escorts Heart Institute and Research Centre Department of Non-Invasive Cardiology Okhla Road New Delhi 110025 IndiaAnil Minocha, Escorts Heart Institute and Research Centre Department of Non-... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3087857 Thu, 10 Dec 2009 15:20:33 +0100 3087857 http://www.medworm.com/index.php?rid=3065680&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F045w882208433833%2F Abstract  To compare utilization of non-invasive ischemic testing, invasive coronary angiography (ICA), and percutaneous coronary intervention (PCI) procedures before and after introduction of 64-slice multi-detector row coronary computed tomographic angiography (CCTA) in a large urban primary and consultative cardiology practice. We utilized a review of electronic medical records (NotesMD®) and the electronic practice management system (Megawest®) encompassing a 4-year period from 2004 to 2007 to determine the number of exercise treadmill (TME), supine bicycle exercise echocardiography (SBE), single photon emission computed tomography (SPECT) myocardial perfusion stress imaging (MPI), coronary calcium score (CCS), CCTA, ICA, and PCI procedures performed annually. Test util... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3065680 Sat, 05 Dec 2009 08:59:25 +0100 3065680 http://www.medworm.com/index.php?rid=3065681&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ff7n5j26t06555658%2F Abstract  Longitudinal two-dimensional strain deformation is a novel technique which evaluates global and regional left ventricular (LV) function with high reproducibility. The aim of the study was to investigate the global and regional systolic function using this method in patients with pure mitral stenosis (MS). Conventional echocardiography and longitudinal two-dimensional strain analysis were performed in 60 patients (41 ± 5 years, 48 women) with mild to moderate MS (mitral valve area: 1.9 ± 0.5 cm²), and 52 healthy controls (40 ± 7 years, 37 women). For strain analysis standard apical views were obtained, and by using a software system peak systolic strain and strain rate were calculated off-line in each segment. In all,... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3065681 Sat, 05 Dec 2009 08:59:24 +0100 3065681 http://www.medworm.com/index.php?rid=3065682&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fv5g88848m26770u2%2F Abstract  The purpose of this study was to examine the usefulness of 11C-acetate positron emission tomography (PET) for assessing the efficacy of cardiac resynchronization therapy (CRT). Enrolled in this study were 20 patients with severe heart failure. All patients underwent 11C-acetate PET within 1 week after CRT. The oxygen consumption was measured by the monoexponential clearance rate of 11C-acetate (Kmono) for both CRT-off and -on. Cardiac efficiency (CE) was determined using the concept of the work metabolic index (WMI). WMI was calculated as WMI = (stroke volume index) × (systolic blood pressure) × (heart rate)/Kmono. The patients were divided into two groups: 14 patients with improved CE (from 5.27 ± 0.91 to 6.77 ±&... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3065682 Fri, 04 Dec 2009 07:20:58 +0100 3065682 http://www.medworm.com/index.php?rid=3065683&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fq8t5104648j46762%2F Abstract  A 45-year-old man, who had been diagnosed with primary pulmonary hypertension (PPH) 8 years before, was referred to our hospital because of short breath and lower-limb edema. Findings of chest X-ray, electrocardiogram, and cardiac ultrasound showed right atrial and ventricular dilatation/hypertrophy that were compatible with advanced PPH. Chest enhanced computed tomography (CT), however, unexpectedly showed that contrast in the main pulmonary artery was diluted by blood flow from the descending aorta. On electrocardiography-synchronized CT, the arterial duct connecting the main pulmonary artery and descending aorta was clearly delineated. As a result, the long-standing diagnosis of PPH was corrected to secondary pulmonary arterial hypertension caused by paten... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3065683 Tue, 01 Dec 2009 21:03:53 +0100 3065683 http://www.medworm.com/index.php?rid=3042699&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F0670u16p414733g0%2F Abstract  Accurate detection of in-vivo vulnerable plaque in coronary arteries is still an open problem. Recent studies show that it is highly related to tissue structure and composition. Intravascular Ultrasound (IVUS) is a powerful imaging technique that gives a detailed cross-sectional image of the vessel, allowing to explore arteries morphology. IVUS data validation is usually performed by comparing post-mortem (in-vitro) IVUS data and corresponding histological analysis of the tissue. The main drawback of this method is the few number of available case studies and validated data due to the complex procedure of histological analysis of the tissue. On the other hand, IVUS data from in-vivo cases is easy to obtain but it can not be histologically validated. In this work, ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3042699 Sun, 29 Nov 2009 09:32:39 +0100 3042699 http://www.medworm.com/index.php?rid=3042700&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fe332420560734332%2F We present a framework to obtain the 3D reconstruction of human coronary arteries by the fusion of intravascular ultrasound (IVUS) and coronary computed tomography angiography (CT). We imaged 23 patients with IVUS and CT. The images from both modalities were registered for 35 arteries, using bifurcations as landmarks. The IVUS images together with IVUS derived lumen and wall contours were positioned on the 3D centerline, which was derived from CT. The resulting 3D lumen and wall contours were transformed to a surface for calculation of shear stress and plaque thickness. We applied variations in selection of landmarks and investigated whether these variations influenced the relation between shear stress and plaque thickness. Fusion was successfully achieved in 31 of the 35 arteries. T... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3042700 Sat, 28 Nov 2009 07:05:41 +0100 3042700 http://www.medworm.com/index.php?rid=3042701&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fw6778m14125344h5%2F Abstract  Magnetic resonance (MR) imaging is a promising modality for the in vivo detection and characterization of atherosclerotic lesions in peripheral arteries. 2D imaging techniques for evaluation of peripheral artery disease (PAD) suffer from poor spatial coverage and have long scan times. The purpose of this study was to compare a diffusion prepared dark blood 3D steady state free precession (3D-DP-SSFP) sequence for evaluating atherosclerotic plaque burden in inguinal and thigh segments of the femoral artery and comparing the results obtained with 2D turbo spin echo (2D-TSE) techniques. A further goal of the study was to examine the inter observer reproducibility of MR plaque burden measures using the 3D DP-SSFP technique. Results of the study indicated higher signal... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3042701 Sat, 28 Nov 2009 07:05:40 +0100 3042701 http://www.medworm.com/index.php?rid=3042702&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa7032436v4712275%2F Abstract  Cardiac Resynchronization Therapy (CRT) constitutes an established way of treatment for patients suffering from severe heart failure. However, this technologically based and expensive mode of therapy may not be effective for a substantial number of individuals. Recent research and advanced echocardiographic modalities have provided new insight on the proper patient selection, lead implantation, optimization and reasons for non-response. Based on this evidence, an overall assessment of parameters that appear to contribute significantly to the outcome of CRT in addition to electrical or mechanical dyssynchrony, seems to be a reasonable approach for more effective resynchronization therapy. Content Type Journal ArticleCategory Original PaperDOI 10.1007/s10554-009-9... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3042702 Wed, 25 Nov 2009 17:00:55 +0100 3042702 http://www.medworm.com/index.php?rid=3032571&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F268w290515485t8u%2F Abstract  Epicardial adipose tissue (EAT) may play an important role for developing an unfavorable cardiovascular risk profile. However, it has not been investigated if EAT is associated with coronary atherosclerosis in non-obese patients. We aimed to evaluate whether EAT is related to coronary atherosclerosis in non-obese patients. Among the consecutive patients who underwent coronary CT angiography (CCTA) with an intermediate pretest likelihood for having coronary artery disease, we excluded the patients whose body mass index (BMI) was over 30 kg/m2 or whose CCTA image quality was not sufficient for the detection of coronary plaque. The remaining patients were divided into the normal and abnormal groups based on the presence of atherosclerotic plaques as seen on the C... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3032571 Tue, 24 Nov 2009 07:13:15 +0100 3032571 http://www.medworm.com/index.php?rid=3032570&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa834448000g625v3%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9533-3Authors E. E. van der Wall, Leiden University Medical Center Leiden The NetherlandsJ. J. Bax, Leiden University Medical Center Leiden The NetherlandsC. A. Swenne, Leiden University Medical Center Leiden The NetherlandsP. Steendijk, Leiden University Medical Center Leiden The NetherlandsM. J. Schalij, Leiden University Medical Center Leiden The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3032570 Tue, 24 Nov 2009 07:13:15 +0100 3032570 http://www.medworm.com/index.php?rid=3032569&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fj81234427769243k%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9540-4Authors E. E. van der Wall, Leiden University Medical Center Leiden The NetherlandsM. J. Schalij, Leiden University Medical Center Leiden The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3032569 Tue, 24 Nov 2009 07:13:15 +0100 3032569 http://www.medworm.com/index.php?rid=3032573&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F1x17014m7tj23817%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9537-zAuthors John-Paul Carpenter, Royal Brompton Hospital Cardiovascular Magnetic Resonance Unit Sydney Street London SW3 6NP UKDudley J. Pennell, Royal Brompton Hospital Cardiovascular Magnetic Resonance Unit Sydney Street London SW3 6NP UK Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 Journal Volume Volume 25 Journal Issue Volume 25, Number 8 / December, 2009 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3032573 Tue, 24 Nov 2009 07:13:14 +0100 3032573 http://www.medworm.com/index.php?rid=3032572&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F92m0k47767808737%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9535-1Authors John N. Makaryus, North Shore University Hospital Manhasset NY USAAmgad N. Makaryus, North Shore University Hospital Manhasset NY USA Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 Journal Volume Volume 25 Journal Issue Volume 25, Number 8 / December, 2009 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3032572 Tue, 24 Nov 2009 07:13:14 +0100 3032572 http://www.medworm.com/index.php?rid=3032574&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fg6341q092l36u466%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9538-yAuthors Leo H. B. Baur, University of Maastricht Department of Cardiology, Atrium Medical Centre Parkstad Henri Dunantstreet 5 6401 CX Heerlen The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3032574 Tue, 24 Nov 2009 07:13:13 +0100 3032574 http://www.medworm.com/index.php?rid=3021491&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F7v912t00w03r5957%2F Abstract  The purpose of this study was to evaluate the impact of computed tomography coronary angiography (CTCA) on the appropriate utilization of catheter angiography (CA). This observational trial analyzed all patients undergoing CA in 2006 and 2007 in one hospital. In 2007, patients having a low to intermediate cardiovascular risk and suspicion of coronary artery disease (CAD) and those with suspicion of progression of known organic heart disease (OHD) underwent CTCA either prior to CA or as the sole imaging modality. Appropriate utilization of CA was defined as: (1) percentage of patients showing normal or non-significant findings at CA, (2) percentage of self-referred patients to CA, and (3) percentage of patients with known OHD undergoing CA without immediate operati... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3021491 Sat, 21 Nov 2009 08:36:21 +0100 3021491 http://www.medworm.com/index.php?rid=3016546&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fvm6m475p2032m981%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9539-xAuthors E. E. van der Wall, Leiden University Medical Center Leiden The NetherlandsJ. J. Bax, Leiden University Medical Center Leiden The NetherlandsJ. W. Jukema, Leiden University Medical Center Leiden The NetherlandsM. J. Schalij, Leiden University Medical Center Leiden The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3016546 Thu, 19 Nov 2009 20:04:33 +0100 3016546 http://www.medworm.com/index.php?rid=3010937&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fd76047531560l100%2F Abstract  This pilot trial aimed to investigate the utilization of 111In-labeling of mesenchymal stromal cells (MSC) for in vivo tracking after intramyocardial transplantation in a xenotransplantation model with gender mismatched cells. Human male MSC were expanded ex vivo and labeled with 111In-tropolone. Ten female pigs were included. The labeled cells were transplanted intramyocardially using a percutaneous injection system. The 111In activity was determined using gamma camera imaging. Excised hearts were analyzed by fluorescence in situ hybridization (FISH) and microscopy. Gamma camera imaging revealed focal cardiac 111In accumulations up to 6 days after injection (N = 4). No MSC could be identified with FISH, and microscopy identified widespread acute infla... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3010937 Wed, 18 Nov 2009 09:33:50 +0100 3010937 http://www.medworm.com/index.php?rid=3010938&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft1161122l2776tn0%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9530-6Authors Marc Dewey, Freie Universität, Humboldt-Universität zu Berlin Department of Radiology, Charité, Medical School Berlin Germany Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3010938 Wed, 18 Nov 2009 04:48:56 +0100 3010938 http://www.medworm.com/index.php?rid=3010939&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa483692141783785%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9534-2Authors E. E. van der Wall, Leiden University Medical Center Leiden The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=3010939 Wed, 18 Nov 2009 04:48:55 +0100 3010939 http://www.medworm.com/index.php?rid=2991181&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft7p50110741q70q5%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9524-4Authors Songtao Liu, Radiology and Imaging Sciences, National Institutes of Health/Clinical Center 9000 Rockville Pike, Bldg 10/ Rm 1C355 Bethesda MD 20892 USADavid A. Bluemke, Radiology and Imaging Sciences, National Institutes of Health/Clinical Center 9000 Rockville Pike, Bldg 10/ Rm 1C355 Bethesda MD 20892 USA Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2991181 Thu, 12 Nov 2009 17:43:20 +0100 2991181 http://www.medworm.com/index.php?rid=2987438&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fn042025864013331%2F Abstract  We sought to explore the normal myocardial signal density (SD) levels during multidetector computed tomography coronary angiography (MDCT-CA) acquisitions and evaluated the impact of beam hardening artifacts. Background: Since myocardial perfusion by MDCT is based on the myocardial signal density (SD), it is pivotal to determine the normal values of myocardial SD and to identify potential mechanisms of misinterpretation of perfusion defects. In routine MDCT acquisitions, we commonly visualize a considerable SD drop at the posterobasal wall resembling perfusion defects, being attributed to beam hardening artifacts. Consecutive asymptomatic patients without history of coronary artery disease (CAD) and low probability of CAD who were referred for MDCT evaluation at o... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2987438 Wed, 11 Nov 2009 19:09:41 +0100 2987438 http://www.medworm.com/index.php?rid=2976109&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F66272j508545q5x6%2F Abstract  During recent years various techniques emerged providing more detailed images and insights in the cardiovascular system. C-Arm computed tomography is currently introduced in cardiac imaging offering the potential of three dimensional imaging of the coronary arteries, the cardiac chambers, venous system and a variety of anatomic anomalies inside the interventional environment. Furthermore it might enable perfusion imaging during percutaneous coronary intervention (PCI). Intravascular ultrasound (IVUS) and optical coherence tomography (OCT) are meanwhile established tools for detailed assessment of the coronary arteries. Their use might further increase with automated tissue characterization, three dimensional reconstruction, integration in angiography systems, and ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2976109 Sat, 07 Nov 2009 19:16:55 +0100 2976109 http://www.medworm.com/index.php?rid=2971663&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fl72517250m306715%2F Abstract  Helical prospective ECG-gating (pECG) may reduce radiation dose while maintaining the advantages of helical image acquisition for coronary computed tomography angiography (CCTA). Aim of this study was to evaluate helical pECG–gating in CCTA in regards to radiation dose and image quality. 86 patients undergoing 64-multislice CCTA were enrolled. pECG-gating was performed in patients with regular heart rates (HR) < 65 bpm; with the gating window set at 70–85% of the cardiac cycle. All patients received oral and some received additional IV beta-blockers to achieve HR < 65 bpm. In patients with higher or irregular HR, or for functional evaluation, retrospective ECG-gating (rECG) was performed. The average X-ray dose was estimated ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2971663 Fri, 06 Nov 2009 19:34:23 +0100 2971663 http://www.medworm.com/index.php?rid=2971664&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fl47r450v7p641215%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9525-3Authors Leo H. B. Baur, University of Maastricht Department of Cardiology, Atrium Medical Centre Parkstad Henri Dunantstreet 5 6401 CX Heerlen The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2971664 Thu, 05 Nov 2009 18:42:09 +0100 2971664 http://www.medworm.com/index.php?rid=2965757&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F61041p7n5414208k%2F Abstract  To explore the value of dual-source CT angiography (DSCTA) in diagnosing coronary artery stenosis (CAS) without heart rate or rhythm control. Eighty-nine patients with different heart rates/rhythms underwent both DSCTA and conventional coronary angiography (CCA) in 1 week. The diagnostic quality of normal coronary arteries and stenosed segments using DSCTA and CCA were analyzed, respectively, with CCA as the gold standard. Kappa test was used to assess the intermodality agreement between DSCTA and CCA in grading CAS. The value of DSCTA in diagnosing CAS (>50% stenoses) were analyzed as well. The total evaluable rate of DSCTA in detecting coronary arteries was 98.8%. No significant difference between evaluable rates from different groups of heart rate (χ 2... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2965757 Wed, 04 Nov 2009 07:12:30 +0100 2965757 http://www.medworm.com/index.php?rid=2965756&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fx402590xt8t5n670%2F Abstract  This paper presents new approaches for the assessment of the arterial and reference diameters in (cardio-)vascular X-ray images, designed to overcome the problems experienced in conventional quantitative coronary and vascular angiography approaches. In single or “straight” vessel segments, the arterial and reference diameter directions were made independent of each other in order to be able to measure the minimal lumen diameter (MLD) more accurately, especially in curved vessel segments. For ostial segments, an extension of this approach was used, to allow measurement of ostial lesions in sidebranches more proximal than using conventional methods. Furthermore, two new bifurcation approaches were developed. The validation study shows that the straight segment a... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2965756 Wed, 04 Nov 2009 07:12:30 +0100 2965756 http://www.medworm.com/index.php?rid=2961730&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F4677207272534351%2F Abstract  To present an efficient and robust method for 3-D reconstruction of the coronary artery tree from multiple ECG-gated views of an X-ray angiography. 2-D coronary artery centerlines are extracted automatically from X-ray projection images using an enhanced multi-scale analysis. For the difficult data with low vessel contrast, a semi-automatic tool based on fast marching method is implemented to allow manual correction of automatically-extracted 2-D centerlines. First, we formulate the 3-D symbolic reconstruction of coronary arteries from multiple views as an energy minimization problem incorporating a soft epipolar line constraint and a smoothness term evaluated in 3-D. The proposed formulation results in the robustness of the reconstruction to the imperfectness in ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2961730 Tue, 03 Nov 2009 11:02:03 +0100 2961730 http://www.medworm.com/index.php?rid=2948052&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fv1n7p210w70g8463%2F This study was conducted on 169 asymptomatic individuals, classified as hyperalphalipoproteinemic (Hyper-A) (Hyper-A, n = 71, HDL-C ≥68 mg/dL) and controls (CTL) (CTL, n = 98, HDL-C >32 and <68 mg/dL). Enzymatic, nephelometric and ultracentrifugation methods were used for biochemical determinations. Hepatic lipase (HL), lipoprotein lipase (LPL), cholesteryl ester transfer protein (CETP) and phospholipids transfer protein (PLTP) activities were measured by radiometric exogenous methods. The prevalence of dyslipidemia, hypertension, smoking, sedentariness, postmenopausal women, coronary artery disease (CAD) and familial history of CAD were determined. High resolution β-mode carotid ultrassonography was performed. The Hyper-A group was older and had... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2948052 Fri, 30 Oct 2009 07:37:30 +0100 2948052 http://www.medworm.com/index.php?rid=2945908&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fg245503254023067%2F We present the case of a 37 year old man who came into the Emergency department complaining of pleuritic chest pain. ECG revealed an evolving anterior wall infarction and transthoracic echocardiogram showed a big mobile thrombus in the ventricular apex. In order to confirm diagnosis and to differentiate other entities like pseudoaneurysm, contrast echocardiography and cardiac MRI with late gadolinium enhancement were performed and allowed a definitive diagnosis. Our patient was treated with intravenous heparin and then with oral anticoagulation. Two months later, echocardiogram showed an apical non-mobile and smaller thrombus. Content Type Journal ArticleCategory Case in PointDOI 10.1007/s10554-009-9521-7Authors Oliva Concepción Fernández Cimadevilla, Hospital Central... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2945908 Thu, 29 Oct 2009 07:15:30 +0100 2945908 http://www.medworm.com/index.php?rid=2941822&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F2044688140551145%2F In conclusion, we describe elevated T2 signal consistent with myocardial edema in patients with LVBS. The T2 signal is highest in myocardium with the most impaired function and resolves over time. Content Type Journal ArticleCategory Original PaperDOI 10.1007/s10554-009-9515-5Authors Subodh B. Joshi, Washington Hospital Center Section of Cardiology, Department of Medicine Washington DC USATania Chao, Washington Hospital Center Section of Cardiology, Department of Medicine Washington DC USADaniel A. Herzka, Philips Research North America Clinical Sites Research Program Bethesda MD USAPeter R. Zeman, Washington Hospital Center Section of Cardiology, Department of Medicine Washington DC USAHoward A. Cooper, Washington Hospital Center Section of Cardiology, Department of Medicine Washing... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2941822 Wed, 28 Oct 2009 07:25:54 +0100 2941822 http://www.medworm.com/index.php?rid=2924353&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fgt064852r32856m4%2F Abstract  As the plaques have enlarged, the changes in specific plaque compositions have not been sufficiently investigated. We evaluated the relation of plaque size to each plaque component (fibrotic, fibrofatty, dense calcium, and necrotic core) in 244 patients with volumetric virtual histology intravascular ultrasound analysis. Plaque volume was significantly correlated with fibrotic volume (r = 0.886, P < 0.001), necrotic core volume (r = 0.716, P < 0.001), fibrofatty volume (r = 0.572, P < 0.001), and dense calcium volume (r = 0.382, P < 0.001). There was a weak correlation between plaque volume and percentage of fibrofatty plaque and dense calcium (r = 0.140, P =&nb... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2924353 Fri, 23 Oct 2009 06:16:53 +0100 2924353 http://www.medworm.com/index.php?rid=2922346&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F8426q45l52282g21%2F Abstract  Arrhythmias have been reported to occur frequently in symptomatic patients with mitral valve prolapse (MVP). The mechanisms causing ventricular arrhythmias in patients with MVP have not been fully investigated. The purpose of this study was to determine the clinical, echocardiographic and heart rate variability parameters, and plasma concentrations of electrolytes and inflammatory markers in predicting ventricular arrhythmias in patients with MVP. A total of 58 consecutive patients with MVP were included in this study. We performed electrocardiography, echocardiography, holter analysis, routine biochemical tests including plasma concentrations of electrolytes and inflammatory markers, and evaluated the clinical characteristics. Ventricular arrhythmia defined as oc... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2922346 Thu, 22 Oct 2009 06:19:01 +0100 2922346 http://www.medworm.com/index.php?rid=2914608&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fl7688v5038hw5518%2F Content Type Journal ArticleCategory Case in PointDOI 10.1007/s10554-009-9519-1Authors Pilar Egea-Serrano, Puerta del Mar University Hospital Hemodynamic and Interventionist Cardiology Unit, Department of Cardiology Avda. Ana de Viya, 21 11009 Cádiz SpainRoque Arana, Puerta del Mar University Hospital Hemodynamic and Interventionist Cardiology Unit, Department of Cardiology Avda. Ana de Viya, 21 11009 Cádiz SpainManuel Sancho, Puerta del Mar University Hospital Hemodynamic and Interventionist Cardiology Unit, Department of Cardiology Avda. Ana de Viya, 21 11009 Cádiz Spain Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2914608 Tue, 20 Oct 2009 15:23:57 +0100 2914608 http://www.medworm.com/index.php?rid=2897303&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fe9456552kx27745t%2F Abstract  The purpose of this study was to examine the relationship between noninvasive measurements of ventricular-vascular coupling (VVC) with exercise tolerance, and compared the value of VVC versus other traditional determinants of exercise capacity in this population. 43 patients with ischemic CMP (age 59 ± 9 years, mean EF 24 ± 8%) underwent cardiopulmonary exercise testing, echocardiography and cardiac magnetic resonance (CMR). VVC was defined non-invasively by the ratio of ventricular systolic elastance (Ees) to the arterial elastance (Ea), where Ees = end-systolic pressure/end-systolic volume index and Ea = end-systolic pressure/stroke volume index. VVC significantly correlated with baseline heart rate (HR), peak exerci... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2897303 Tue, 13 Oct 2009 08:20:31 +0100 2897303 http://www.medworm.com/index.php?rid=2897302&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fn456224m4363mmw2%2F Abstract  Anthracyclines are important in the treatment of numerous malignant diseases but the use is limited by a risk of heart failure (CHF). LVEF (left ventricular ejection fraction) measurements by radio-nuclide ventriculography with multiple gated acquisition (MUGA) is often used for cardiac monitoring. However, diastolic variables have been proposed as sensitive supplements. It was hypothesized that a change in diastolic filling variables measured by MUGA could identify individuals after epirubicin treatment (ET) in risk of developing heart failure. A retrospective analysis of registered raw data. Individuals completing high-dose ET for breast cancer were selected from a 2-year period. All had MUGA-scans performed prior to and after ET and were observed clinically for... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2897302 Tue, 13 Oct 2009 08:20:31 +0100 2897302 http://www.medworm.com/index.php?rid=2889030&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fh191115p78371776%2F Abstract  Computed Tomography Coronary Angiography (CTCA) for the diagnosis and evaluation of coronary artery occlusive disease has rapidly gained acceptance among clinicians. Its growing use in selected populations has provided a wealth of data, leading to a recent flurry of articles describing both the benefits and limitations of this imaging modality. In this article, we describe the case of an 80 year old woman who presented with anginal symptoms, who first underwent CTCA which suggested severe right coronary artery stenosis. A subsequent invasive coronary angiogram was crucial in revealing a total occlusion and the presence of collateral vessels, findings that would ultimately guide therapy. This case demonstrates a significant limitation in the use of CTCA and th... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2889030 Sun, 11 Oct 2009 05:59:07 +0100 2889030 http://www.medworm.com/index.php?rid=2864521&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F8m27386355183101%2F Abstract  Whether distal protection devices (DPDs) during percutaneous coronary intervention (PCI) can improve myocardial function in patients with acute myocardial infarction (AMI) is still under debate. Using tissue Doppler imaging (TDI), we evaluate the global and regional left ventricular systolic and diastolic functions in patients with anterior AMI using DPDs compared with conventional PCI. Ninety-six patients with anterior AMI were randomly assigned to either PCI with DPDs (DPD, n = 46) or traditional PCI (control, n = 50) groups. At the 3- and 6-month follow-ups, the DPD group had a higher left ventricular ejection fraction than the control group (51.6 ± 3.6 vs. 49.3 ± 5.3% and 53.0 ± 3.7 vs. 50.8 ± 5.2%,... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2864521 Sun, 04 Oct 2009 05:43:44 +0100 2864521 http://www.medworm.com/index.php?rid=2849409&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fx9k5248m37527122%2F In conclusion, the new 3D QCA approach allows highly accurate and precise assessments of obstruction length and optimal viewing angle from X-ray angiography. Content Type Journal ArticleCategory Original PaperDOI 10.1007/s10554-009-9509-3Authors Shengxian Tu, Leiden University Medical Center Department of Radiology Leiden The NetherlandsGerhard Koning, Leiden University Medical Center Department of Radiology Leiden The NetherlandsWouter Jukema, Leiden University Medical Center Department of Cardiology Leiden The NetherlandsJohan H. C. Reiber, Leiden University Medical Center Department of Radiology Leiden The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Jou... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2849409 Tue, 29 Sep 2009 20:08:34 +0100 2849409 http://www.medworm.com/index.php?rid=2849410&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fk260270648776553%2F This study confirms that in an animal model of inflamed and non-inflamed atherosclerosis, significant differences in FDG SUV allow differentiation of highly inflamed atherosclerotic aortas from those stabilized by statin therapy and low cholesterol diet and controls. Content Type Journal ArticleCategory Original PaperDOI 10.1007/s10554-009-9506-6Authors John R. Davies, University of Cambridge, Addenbrooke’s Hospital Division of Cardiovascular Medicine Cambridge UKDavid Izquierdo-Garcia, University of Cambridge, Addenbrooke’s Hospital Wolfson Brain Imaging Centre Box 65 Cambridge CB2 0QQ UKJames H. F. Rudd, University of Cambridge, Addenbrooke’s Hospital Division of Cardiovascular Medicine Cambridge UKNichola Figg, University of Cambridge, Addenbrooke’s Hospital Division of C... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2849410 Tue, 29 Sep 2009 01:11:46 +0100 2849410 http://www.medworm.com/index.php?rid=2841106&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fu22740w4u1264521%2F Abstract  Bright blood cine images acquired using Magnetic Resonance Imaging contain simple contrast that is tractable to automated analysis, which can be used to derive a measure of arterial compliance that is known to correlate with disease severity. The purpose of this work was to evaluate whether automated methods could be used reliably on a clinically relevant population, and to assess the precision of these measurements so that it could be compared with expert manual assessment. In this paper we apply an algorithm similar to that used by Krug et al., and the exact processing steps are described in detail to allowing easy reproduction of our methods. Phantoms of different sizes have been assessed and the MRI measurements are found to correlate well (r = 0.999... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2841106 Fri, 25 Sep 2009 05:50:01 +0100 2841106 http://www.medworm.com/index.php?rid=2835712&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fh3wq90857g210416%2F The objectives of this article are (i) to utilize computer methods in detection of stent struts imaged in vivo by optical coherence tomography (OCT) during percutaneous coronary interventions (PCI); (ii) to provide measurements for the assessment and monitoring of in-stent restenosis by OCT post PCI. Thirty-nine OCT cross-sections from seven pullbacks from seven patients presenting varying degrees of neointimal hyperplasia (NIH) are selected, and stent struts are detected. Stent and lumen boundaries are reconstructed and one experienced observer analyzed the strut detection, the lumen and stent area measurements, as well as the NIH thickness in comparison to manual tracing using the reviewing software provided by the OCT manufacturer (LightLab Imaging, MA, USA). Very good agreements ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2835712 Thu, 24 Sep 2009 14:37:08 +0100 2835712 http://www.medworm.com/index.php?rid=2835711&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fr7h3g72473104462%2F We presented an unique case of apical hypertrophic cardiomyopathy concomitant with subaortic obstruction, apical sequestration, and valvular aortic stenosis. The echocardiographic findings were conflicting and characterized by quadruple pressure gradients within the left ventricle, which were compatible with the findings of 64-slice computed tomography imaging and cardiac catheterization. Content Type Journal ArticleCategory Case in PointDOI 10.1007/s10554-009-9494-6Authors Chao-Chin Chen, Lo-Tung Poh-Ai Hospital Division of Cardiology, Department of Medicine 83 Nan Chang St. Lotung I-Lan 265 TaiwanMeng-Huan Lei, Lo-Tung Poh-Ai Hospital Division of Cardiology, Department of Medicine 83 Nan Chang St. Lotung I-Lan 265 TaiwanYen-Jen Sung, National Yang-Ming University Department of Ana... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2835711 Thu, 24 Sep 2009 14:37:08 +0100 2835711 http://www.medworm.com/index.php?rid=2835713&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fqr09uu2l44037106%2F Abstract  Intramural Hematoma (IMH) is defined as localized hemorrhage within the aortic wall and is included in the acute aortic syndrome spectrum with aortic dissection and penetrating aortic ulcer. The mortality from IMH is similar to classic aortic dissection (21%). 16% of patients with IMH will evolve to classic aortic dissection over time. Despite this confusion exists regarding the precise definitions and radiologic features of IMH versus penetrating ulcers with mural thrombus and overt aortic dissection. Content Type Journal ArticleCategory ReviewDOI 10.1007/s10554-009-9504-8Authors Orla Buckley, Brigham and Women’s Hospital Noninvasive Cardiovascular Imaging, Department of Radiology Boston MA USAFrank J. Rybicki, Brigham and Women’s Hospital Applied Imaging S... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2835713 Thu, 24 Sep 2009 14:37:05 +0100 2835713 http://www.medworm.com/index.php?rid=2835714&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fr8517q7058142x78%2F In conclusion, the quantitative analysis together with the qualitative analysis rules out artefact-induced stenosis. Content Type Journal ArticleCategory Original PaperDOI 10.1007/s10554-009-9502-xAuthors Wisnumurti Kristanto, University Medical Center Groningen, University of Groningen Department of Radiology Groningen The NetherlandsPeter M. van Ooijen, University Medical Center Groningen, University of Groningen Department of Radiology Groningen The NetherlandsRiksta Dikkers, University Medical Center Groningen, University of Groningen Department of Radiology Groningen The NetherlandsMarcel J. Greuter, University Medical Center Groningen, University of Groningen Department of Radiology Groningen The NetherlandsFelix Zijlstra, University Medical Center Groningen, University of Gron... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2835714 Thu, 24 Sep 2009 14:31:30 +0100 2835714 http://www.medworm.com/index.php?rid=2833624&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fw167h06251771p40%2F We present a 48-year-old male admitted with atrial flutter, acute chest infection and signs of right heart congestion. PC was documented one year previously on a non-contrast CT chest. On this occasion, cardiac catheterisation confirmed hemodynamically significant CCP and cardiac magnetic resonance (cMR) study showed contiguous mass lesions in the pericardium, compression of the right ventricle, enlargement of the right atrium, hepatic enlargement and a pneumonic process in the left lung. He was commenced on antibiotics and anti-tuberculous therapy with a diagnosis of bacterial super-infection of tuberculous CCP. This was confirmed at pericardectomy along with an infected fistula into the left lung. Any finding of PC should be followed up with a thorough haemodynamic and anatomical ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2833624 Wed, 23 Sep 2009 05:50:40 +0100 2833624 http://www.medworm.com/index.php?rid=2817643&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fa384216712183341%2F Abstract   123I-β-methyl-iodophenyl pentadecanoic acid (BMIPP) and 99mTc-Tetrofosmin (TF) mismatch designated as stunned myocardium having both systolic and diastolic components. The degree of mismatch might reflect subsequent functional improvement, and this study was designed to unravel the impact of mismatched defect score (MMDS) on recovery of both systolic and diastolic function following acute myocardial infarction (AMI). Forty patients with recent AMI were recruited, and all of them underwent emergency percutaneous coronary intervention. Echocardiography and BMIPP and TF cardiac scintigraphy were performed on 7 ± 3 days of admission. Follow up echocardiography was performed after 3 months. MMDS were compared with the systolic [ejection fraction ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2817643 Sat, 19 Sep 2009 05:53:44 +0100 2817643 http://www.medworm.com/index.php?rid=2817644&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fr27x4q6235462tl1%2F Abstract  To assess whether absolute mass scores are comparable or differ between identical 64-slice MDCT scanners of the same manufacturer and to compare absolute mass scores to the physical mass and between scan modes using a calcified phantom. A non-moving anthropomorphic phantom with nine calcifications of three sizes and three densities was scanned 30 times on three 64-slice MDCT scanners of manufacturer A and on three 64-slice MDCT scanners of manufacturer B in both sequential and spiral scan mode. The mean mass scores and mass score variabilities of seven calcifications were determined for all scanners; two non-detectable calcifications were omitted. It was analyzed whether identical scanners yielded similar or significantly different mass scores. Furthermore mass sc... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2817644 Sat, 19 Sep 2009 05:53:43 +0100 2817644 http://www.medworm.com/index.php?rid=2811429&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fg8mkx48573018w07%2F Abstract  To assess the contractility of accessory left atrial appendages (LAAs) using multiphasic cardiac CT. We retrospectively analyzed the presence, location, size and contractile properties of accessory LAAs using multiphasic cardiac 64-slice CT in 102 consecutive patients (63 males, 39 females, mean age 57). Multiplanar reformats were used to create image planes in axial oblique, sagittal oblique and coronal oblique planes. For all appendages with an orifice diameter ≥ 10 mm, axial and sagittal diameters and appendage volumes were recorded in atrial diastole and systole. Regression analysis was performed to assess which imaging appearances best predicted accessory appendage contractility. Twenty-three (23%) patients demonstrated an accessory LAA, all ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2811429 Fri, 18 Sep 2009 16:27:22 +0100 2811429 http://www.medworm.com/index.php?rid=2811430&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F211883v412617581%2F Abstract  To examine the effect of HIV infection on regional left ventricular dysfunction in cardiovascularly asymptomatic individuals. Nineteen HIV-negative and 27 HIV-positive cardiovascularly asymptomatic study participants in Baltimore, Maryland were selected and underwent tagged cardiac magnetic resonance imaging. Regional left ventricular myocardial mid-wall peak systolic circumferential strain (Ecc) and early diastolic strain rate (SRE) of the left ventricle were assessed with the use of the harmonic phase analysis. The average Ecc and SRE measurements were compared between HIV-negative and HIV-positive individuals. Compared with the HIV-negatives, the HIV-positives had lower average Ecc and SRE measurements in 90% of the 16 standard left ventricular segments. Of the... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2811430 Thu, 17 Sep 2009 23:09:46 +0100 2811430 http://www.medworm.com/index.php?rid=2811431&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fc770512304h78x7n%2F Abstract  To evaluate the accuracy of myocardial perfusion SPECT (MPI) in the detection and allocation of vessel specific perfusion defects (PD) using standard distribution territories in a routine clinical procedure of patients with multivessel disease (MVD). Combined quantitative coronary angiography and fractional flow reserve (QCA/FFR) measurements were used as invasive reference standard. 216 vessels in 72 MVD patients (67 ± 10 years, 28 female) were investigated using MPI and QCA. FFR of 93 vessels with intermediate stenoses was determined. MPI detected significant stenoses according to QCA/FFR findings with a sensitivity of 85%. However, vessel-based evaluation using standard myocardial distribution territories delivered a sensitivity of only 62% (28 ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2811431 Thu, 17 Sep 2009 12:33:52 +0100 2811431 http://www.medworm.com/index.php?rid=2811432&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fkx38073782g98666%2F Abstract  Many apparent healthy persons die from cardiovascular disease, despite major advances in prevention and treatment of cardiovascular disease. Traditional cardiovascular risk factors are able to predict cardiovascular events in the long run, but fail to assess current disease activity or nearby cardiovascular events. There is a clear relation between the occurrence of cardiovascular events and the presence of so-called vulnerable plaques. These vulnerable plaques are characterized by active inflammation, a thin cap and a large lipid pool. Spectroscopy is an optical imaging technique which depicts the interaction between light and tissues, and thereby shows the biochemical composition of tissues. In recent years, impressive advances have been made in spectroscopy tec... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2811432 Thu, 17 Sep 2009 12:33:51 +0100 2811432 http://www.medworm.com/index.php?rid=2811434&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fvm1k1315qg495615%2F Abstract  Cell-based therapy has been proposed as a novel strategy for patients with severe peripheral arterial disease by stimulating vascular growth. In clinical studies of this therapy, the emphasis has been on demonstrating recovery of clinical parameters, rather than on evaluation of blood flow recovery. Angiography is still the gold standard for the assessment of lower leg arteries. Therefore, we studied the usefulness of angiography in the evaluation of cell-based therapy. Sixteen patients with critical leg ischemia (ischemic rest pain or ulcers), or persistent (>12 months) profound disabling claudication were unilaterally treated with autologous bone marrow-derived mononuclear cells. Pre- and 6 months post-treatment digital subtraction angiographies (DS... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2811434 Wed, 16 Sep 2009 13:15:06 +0100 2811434 http://www.medworm.com/index.php?rid=2811433&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F5rw44814pn65qv64%2F Abstract  Cardiovascular magnetic resonance (CMR) imaging provides highly accurate measurements of biventricular volumes and mass and is frequently used in the follow-up of patients with acquired and congenital heart disease (CHD). Data on reproducibility are limited in patients with CHD, while measurements should be reproducible, since CMR imaging has a main contribution to decision making and timing of (re)interventions. The aim of this study was to assess intra-observer and interobserver variability of biventricular function, volumes and mass in a heterogeneous group of patients with CHD using CMR imaging. Thirty-five patients with CHD (7–62 years) were included in this study. A short axis set was acquired using a steady-state free precession pulse sequence. Intra... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2811433 Wed, 16 Sep 2009 13:15:06 +0100 2811433 http://www.medworm.com/index.php?rid=2811436&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fuxkl704761183p44%2F Abstract  Reperfusion may cause intramyocardial hemorrhage (IMH) by extravasation of erythrocytes through severely damaged endothelial walls. The purpose of the study was to evaluate the clinical significance of IMH in relation to infarct size, microvascular obstruction (MVO) and function in patients after primary percutaneous intervention. Forty-five patients underwent cardiovascular MR imaging (CMR) 1 week and 4 months after primary stenting for a first acute myocardial infarction. T2-weighted spin-echo imaging (T2W) was used to assess infarct related edema and IMH, and delayed enhancement (DE) was used to assess infarct size and MVO. Cine CMR was used to assess left ventricular volumes and function at baseline and at 4 months follow-up. In 22 (49%) patient... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2811436 Wed, 16 Sep 2009 13:15:05 +0100 2811436 http://www.medworm.com/index.php?rid=2811435&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F42v7u861q7111017%2F Abstract  We aimed to study the vascular reactivity of young male hypogonadal hypogonadism patients without any cardiovascular risk factors and compare these findings with the ones of age-matched healthy controls. Study population consisted of 26 young male hypogonadotrophic hypogonadism patients (20.9 ± 1.3 years) and 25 age-matched healthy male controls (21.8 ± 2.9 years, P = NS). In addition to detailed hormonal analysis, each subject underwent ultrasound study of right brachial artery. Vessel diameter was measured at rest, during reactive hyperemia [endothelium-dependent flow-mediated vasodilation (FMD)] and after sublingual nitroglycerin administration (endothelium-independent vasodilation). Both flow-mediated and endothelium-ind... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2811435 Wed, 16 Sep 2009 13:15:05 +0100 2811435 http://www.medworm.com/index.php?rid=2811437&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fb1353j5291512570%2F Abstract  For reproducible measurements of right ventricular (RV) volume and function, it may be important to use a consistent method to identify end systole (ES). We determined whether a significant difference exists between RV volumes measured using varying criteria from previous studies to define the timing of ES. In three normal subjects and nine patients with congenital heart disease, we measured RV volume from 3D reconstructions generated from 12 short and long axis magnetic resonance images (MRI). Cine frames analyzed included two frames before and three frames following ES, which we determined as the frame in which chamber area was most frequently minimum. ES coincided with onset of aortic valve closure in ten of 12 subjects; complete closure occurred 1 frame later.... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2811437 Wed, 16 Sep 2009 13:15:02 +0100 2811437 http://www.medworm.com/index.php?rid=2723810&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fh6vh00n3x44um763%2F Abstract  Investigation of phosphorus (31P) magnetic resonance spectroscopy under stress conditions provides a non-invasive tool to examine alterations in cardiac high-energy phosphate metabolism that may not be evident at rest. Our aim was to establish cardiac 31P MR spectroscopy during leg exercise at 3T. The increased field strength should provide a higher signal to noise ratio than at lower field strengths. Furthermore, relatively high temporal resolution at a sufficiently fine spatial resolution should be feasible. 31P MR spectra were obtained with a 3D acquisition weighted chemical shift imaging sequence in 20 healthy volunteers at rest, during dynamic physiological leg exercise and after recovery at 3T. Haemodynamic measurements were made throughout and the rate press... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2723810 Fri, 21 Aug 2009 10:53:46 +0100 2723810 http://www.medworm.com/index.php?rid=2701382&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft1517457523p1t41%2F Content Type Journal ArticleCategory Letter to the EditorDOI 10.1007/s10554-009-9488-4Authors John Purvis, Altnagelvin Hospital, Western HSC Trust Department of Cardiology Glenshane Road Londonderry BT47 6SB UKStephen Barr, Altnagelvin Hospital, Western HSC Trust Department of Cardiology Glenshane Road Londonderry BT47 6SB UK Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2701382 Wed, 12 Aug 2009 16:01:55 +0100 2701382 http://www.medworm.com/index.php?rid=2701383&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fj00515l31g187674%2F Abstract  In b-thalassemia, myocardial iron overload contributes to heart failure, despite chelation treatment. We hypothesized that myocardial T2*, an index of iron overload, influences patients’ physical activity. We assessed a thalassemic population by both cardiovascular magnetic resonance imaging (CMR) and ergospirometry test. Sixty-six thalassemic patients aged 27 (19–40) years, 30 without (NHF) and 36 with heart failure (HF), were studied. Cardiac T2* and left ventricular ejection fraction (LVEF) were evaluated using a 1.5 T system. VO2max, AT, Mets and duration of exercise by ergospirometry were also assessed. Myocardial T2* was lower in HF compared to NHF patients (14.7 ± 6.6 vs. 39 ± 2 ms, P < 0.001). LVEDV and ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2701383 Wed, 12 Aug 2009 16:01:53 +0100 2701383 http://www.medworm.com/index.php?rid=2698112&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F2p1w74393v932661%2F Abstract  Left ventricular aneurysm (LVA) after myocardial infarction often results in serious complications. So far, when the LVA happened is unclear. Furthermore, it is a question whether percutaneous coronary intervention (PCI) can change or reverse the formation of LVA? And the report about the long term follow-up was rare. So this study was to evaluate the time sequence of the formation of LVA through left ventriculography in large scale of consecutive acute myocardial infarction (AMI) patients and evaluate the influence of PCI at different time after AMI on the change of systolic synchrony through phase analysis of equilibrium radionuclide angiography. The change of serum brain natriuretic peptide (BNP) was also measured to investigate its association with LVA. And fo... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2698112 Wed, 12 Aug 2009 05:55:36 +0100 2698112 http://www.medworm.com/index.php?rid=2686971&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fh76030087tq78024%2F Abstract  The purpose of this study was to determine the cardiac phase having the highest coronary sharpness for low and high heart rate patients scanned with dual source CT (DSCT) and to compare coronary image sharpness over different cardiac phases. DSCT coronary CT scans for 30 low heart rate (≤70 beats per minute- bpm) and 30 high heart rate (>70 bpm) patients were reconstructed into different cardiac phases, starting at 30% and increasing at 5% increments until 70%. A blinded observer graded image sharpness per coronary segment, from which sharpness scores were produced for the right (RCA), left main (LM), left anterior descending (LAD), and circumflex (Cx) coronary arteries. For each coronary artery, the phase with maximal image sharpness was identified... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2686971 Sun, 09 Aug 2009 09:37:55 +0100 2686971 http://www.medworm.com/index.php?rid=2683347&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F61ng238h022p100u%2F Abstract  High field magnetic resonance imaging (MRI) was performed to investigate the long-term effect of ezetimibe (eze), a cholesterol resorption blocker, on atherosclerotic lesion formation in the thoracic aorta of apolipoprotein E-deficient mice (apoE −/− ) in comparison to wild type mice (WT). Fifteen-month-old apoE −/− (Western type diet), apoE −/−eze (Western type diet with eze) which received eze (5 mc/kg/day) continuously, and age-matched WT (normal chow) were studied using contrast-enhanced 3D turbo-spin-echo sequences (RARE factor 2) on a 7 Tesla scanner. Vessel parameters were analyzed in the aortic root (AR) and aortic arch (AA) and compared to those found in histology. Plasma cholesterol levels were reduced at 15 months by 71% (P&nbs... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2683347 Fri, 07 Aug 2009 13:42:10 +0100 2683347 http://www.medworm.com/index.php?rid=2683348&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft0783302798715w2%2F Abstract  Electrocardiogram (ECG)-triggered, low dose computed tomography (CT) is increasingly used for attenuation correction in myocardial perfusion imaging (MPI) with SPECT. The purpose of the study was to assess the prevalence of relevant noncardiac findings in the field-of-view of such attenuation correction CT scans. Five hundred and eighty-two consecutive patients (211 female, 371 male; mean age: 64 ± 11 years; BMI: 27.7 ± 5.3 kg/m2) underwent 64-slice, ECG-triggered CT scanning for attenuation correction of MPI with SPECT. Relevant findings were defined as abnormalities that required clinical or radiological follow-up. Noncardiac findings were detected in 400 patients (68.7%). In 196 patients (33.7%) 226 relevant findings were detected... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2683348 Fri, 07 Aug 2009 12:42:21 +0100 2683348 http://www.medworm.com/index.php?rid=2680689&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fu35112302x1564x3%2F Abstract  The purpose of this study is to assess the incremental value of tissue Doppler (TDI) derived displacement curves (TDint) compared to TDI velocity curves (TDvel) for the evaluation of left ventricular (LV) dyssynchrony (LVD). About 25 patients (pts.) with systolic heart failure were studied by TDvel and TDint. Four TDI sample volumes were placed at the basal and four at the mid ventricular myocardium, utilising two imaging planes. LV dyssynchrony (LVD) was defined as an interregional delay of >40 ms corrected for heart rate. 10 pts. had synchronous contraction, 15 pts. LVD as defined by two experts (EC). To determine diagnostic accuracy and intra-observer variability two identical sets of 100 documents (25 pts. × two imaging planes × tw... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2680689 Tue, 04 Aug 2009 21:36:14 +0100 2680689 http://www.medworm.com/index.php?rid=2666143&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp404554411q9673t%2F We examined the relation between coronary calcium score (CS) and the performance of CTCA in patients with stable and unstable angina in order to understand under which conditions CTCA might be a gate-keeper to conventional coronary angiography (CCA) in such patients. We included 360 patients between 50 and 70 years old with stable and unstable angina who were clinically referred for CCA irrespective of CS. Patients received CS and CCTA on 64-slice scanners in a multicenter cross-sectional trial. The institutional review board approved the study. Diagnostic performance of CTCA to detect or rule out significant coronary artery disease was calculated on a per patient level in pre-defined CS categories. The prevalence of significant coronary artery disease strongly increased with C... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2666143 Sun, 02 Aug 2009 06:41:33 +0100 2666143 http://www.medworm.com/index.php?rid=2661826&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fh75g8071307xv27t%2F Abstract  The aim of this study was to evaluate the feasibility of right ventricular (RV) longitudinal peak systolic strain (LPSS) assessment for the follow-up of adult patients with corrected tetralogy of Fallot (TOF). Adult patients (n = 18) with corrected TOF underwent echocardiography and CMR twice with a time interval of 4.2 ± 1.7 years. RV performance was derived from CMR, and included RV volumes and ejection fraction (EF). LPSS was calculated globally (GLPSS) and in the RV free wall (LPSS FW), with echocardiographic speckle-tracking strain-analysis. Baseline (G)LPSS values were compared between patients and healthy controls; the relation between (G)LPSS and CMR parameters was evaluated and the changes in (G)LPSS and CMR parameters during foll... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2661826 Thu, 30 Jul 2009 07:49:48 +0100 2661826 http://www.medworm.com/index.php?rid=2661827&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F6021w1176452668u%2F Abstract  The purpose of our study was to test the usefulness of speckle-tracking two-dimensional echocardiography (in particular longitudinal strain and strain rate) in predicting the response to cardiac resynchronization therapy. The standard approach has been tissue Doppler-based echocardiographic imaging (TDI) has initially showed promising results in small clinical trials. However, recent larger, prospective randomized clinical trials (PROSPECT, ReTHINK) showed that TDI is inadequate to predict response from CRT in patients with heart failure. Altogether, these data suggest the need to identify alternative echocardiographic parameters to predict the response to CRT. We included 53 patients suffering from heart failure, who received CRT. TDI and two-dimensional speckle ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2661827 Wed, 29 Jul 2009 07:01:10 +0100 2661827 http://www.medworm.com/index.php?rid=2652355&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fvv70t56t23184244%2F Content Type Journal ArticleCategory Case in PointDOI 10.1007/s10554-009-9479-5Authors María Martín, Hospital Universitario Central de Asturias Cardiology Department Oviedo SpainLuis H. Luyando, Hospital Universitario Central de Asturias Radiology Department Oviedo SpainJuan J. Rondán, Hospital Universitario Central de Asturias Cardiology Department Oviedo SpainGustavo Iglesias Cubero, Hospital Universitario Central de Asturias Cardiology Department Oviedo Spain Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2652355 Tue, 28 Jul 2009 06:20:56 +0100 2652355 http://www.medworm.com/index.php?rid=2647743&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ff02u63v7101wh024%2F Abstract  Type 2 diabetes mellitus (DM) is associated with a higher risk of cardiovascular disease and atherosclerotic burden. However little data exists in regards to plaque distribution and plaque composition in these patients. To assess for differences in the coronary plaques burden and composition among symptomatic patients with and without type 2 DM using multidetector computed tomography angiography (MDCTA). The 416 symptomatic patients (64% males, mean age: 61 ± 13 years) with 61 (15%) reporting type 2 DM, who underwent contrast-enhanced MDCTA were studied. Enrolled patients had an intermediate to high pre-test probability of obstructive coronary artery disease. Multivariate analysis was used to correct for differences in age and gender. Patients with... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2647743 Sun, 26 Jul 2009 22:46:40 +0100 2647743 http://www.medworm.com/index.php?rid=2647742&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp323tu241k626476%2F Abstract  The aim of this review was to describe the different ultrasonic modalities to non-invasively evaluate right cardiac chambers and pulmonary vascular bed function. M-Mode, 2-D, conventional pulsed doppler, tissue doppler imaging (TDI), strain rate imaging (SRI) and 3D echocardiography are illustrated in order to obtain both regional and global right heart and pulmonary function. The results have a good correlation with other invasive and non-invasive diagnostic techniques, as magnetic resonance imaging (MRI). All these echocardiograpic techniques can be employed to evaluate the morphologic and functional pictures of right heart and pulmonary circulation in presence of pulmonary hypertension (PH). The hemodynamic profile obtained consent to anatomically and functiona... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2647742 Sun, 26 Jul 2009 22:46:40 +0100 2647742 http://www.medworm.com/index.php?rid=2647744&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F707226l0u3m6x134%2F In conclusion, this validation study clearly demonstrates the superiority of the SGLI algorithm in the visualization of coronary arteries from X-ray angiograms. Content Type Journal ArticleCategory Original PaperDOI 10.1007/s10554-009-9482-xAuthors Shengxian Tu, Leiden University Medical Center Department of Radiology Leiden The NetherlandsGerhard Koning, Leiden University Medical Center Department of Radiology Leiden The NetherlandsJoan C. Tuinenburg, Leiden University Medical Center Department of Radiology Leiden The NetherlandsWouter Jukema, Leiden University Medical Center Department of Cardiology Leiden The NetherlandsSu Zhang, Shanghai Jiao Tong University Department of Biomedical Engineering Shanghai ChinaYazhu Chen, Shanghai Jiao Tong University Department of Biomedical Engin... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2647744 Sun, 26 Jul 2009 22:46:38 +0100 2647744 http://www.medworm.com/index.php?rid=2647745&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fdt38306326g211v2%2F This study evaluates the correlation between DTM and coronary artery disease (CAD) measured by CT angiography (CTA) in symptomatic patients. It also investigates the correlation between CTA and a new index of neurovascular reactivity measured by DTM. 129 patients, age 63 ± 9 years, 68% male, underwent DTM, CAC and CTA. Adjusted DTM indices in the occluded arm were calculated: temperature rebound: aTR and area under the temperature curve aTMP-AUC. DTM neurovascular reactivity (NVR) index was measured based on increased fingertip temperature in the non-occluded arm. Obstructive CAD was defined as ≥50% luminal stenosis, and normal as no stenosis and CAC = 0. Baseline fingertip temperature was not different across the groups. However, all DTM indices of vascul... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2647745 Sun, 26 Jul 2009 22:46:36 +0100 2647745 http://www.medworm.com/index.php?rid=2647746&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fq15t657g2r4k68m0%2F Abstract  A typical acquisition protocol for multi-row detector computed tomography (MDCT) angiography is to obtain all phases of the cardiac cycle, allowing calculation of ejection fraction (EF) simultaneously with plaque burden. New MDCT protocols scanner, designed to reduce radiation, use prospectively acquired ECG gated image acquisition to obtain images at certain specific phases of the cardiac cycle with least coronary artery motion. These protocols do not we allow acquisition of functional data which involves measurement of ejection fraction requiring end-systolic and end-diastolic phases. We aimed to quantitatively identify the cardiac cycle phase that produced the optimal images as well as aimed to evaluate, if obtaining only 35% (end-systole) and 75% (as a surroga... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2647746 Sun, 26 Jul 2009 21:09:17 +0100 2647746 http://www.medworm.com/index.php?rid=2643821&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fp84u433652170g15%2F Abstract  To test the feasibility and accuracy of myocardial contrast echocardiography (MCE) for predicting infarct size (IS) in a rat model of myocardial infarction (MI) and to compare a simplified single plane-based measurement of IS with the conventional three plane-based approach. Fifty male SD rats underwent left anterior descending artery ligation and were evaluated by MCE 8 h post MI. IS was calculated by the single and three plane-based approaches, compared to that determined by triphenyltetrazolium chloride (TTC) staining method. Simplified single plane-based MCE approach and TTC method showed similar IS values (38.48 ± 16.80% vs. 35.72 ± 15.33%, P > 0.05) and presented a favorable positive correlation (r = 0.851, P&... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2643821 Sat, 25 Jul 2009 00:24:46 +0100 2643821 http://www.medworm.com/index.php?rid=2632900&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft2011t6524028801%2F Abstract  The reproducibility, interobserver and intraobserver variability of brachial artery flow-mediated dilation (FMD) has previously been reported. However, no study has compared the brachial artery FMD, detected by ultrasonography, simultaneously with reference imaging technique. The aim of this study was to assess the precision and accuracy of ultrasonography in detecting FMD compared to angiography. The study population consisted of 40 patients (13 females, mean age 56 ± 8 years) who underwent elective diagnostic coronary angiography. The ultrasonographic FMD (USFMD) measurements have been performed according to established standards with the subjects laying on the angiography table. Selective left brachial angiography was performed while ultrasonogra... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2632900 Tue, 21 Jul 2009 00:09:05 +0100 2632900 http://www.medworm.com/index.php?rid=2567523&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F5u5807g166311817%2F We present a case of a 69 year-old woman complaining of palpitations and worsening heart failure, after the 2nd cycle of fludarabine due to Hodgkin’s lymphoma. Echocardiography revealed abnormalities typical for corrected transposition of the great arteries (CTGA), which were confirmed in multislice computed tomography (MSCT), as well as subvalvular pulmonary stenosis. There is the case of one of the oldest patients with CTGA and subvalvular pulmonary stenosis. MSCT seems to be a useful and complementary method in diagnosis such diseases. Content Type Journal ArticleCategory Case in PointDOI 10.1007/s10554-009-9473-yAuthors Wojciech Wróbel, Medical University of Silesia Ziołowa 47 40-635 Katowice PolandMaciej Sosnowski, Medical University of Silesia Ziołowa 47 40-635 Kat... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2567523 Wed, 01 Jul 2009 06:22:38 +0100 2567523 http://www.medworm.com/index.php?rid=2438416&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fu3522p634k008365%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9466-xAuthors E. E. van der Wall, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. J. Bax, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. W. Jukema, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsM. J. Schalij, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2438416 Tue, 26 May 2009 06:01:35 +0100 2438416 http://www.medworm.com/index.php?rid=2438418&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft286236730058648%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9472-zAuthors Gudrun M. Feuchtner, Innsbruck Medical University Department of Radiology II Anichstrasse 35 6020 Innsbruck Austria Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2438418 Tue, 26 May 2009 06:01:34 +0100 2438418 http://www.medworm.com/index.php?rid=2438417&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fbw73249m63362851%2F We report the case of a highly symptomatic 36 years old patient with a myocardial bridge in left anterior descending coronary artery in which surgical treatment was proposed. Previous to surgery a non invasive coronariography with Cardiac CT was practised in order to define the anatomy. Content Type Journal ArticleCategory Case in PointDOI 10.1007/s10554-009-9470-1Authors M. Martín, Hospital Universitario Central de Asturias Cardiology Department Calle Julián Clavería s/n 33006 Oviedo SpainE. Romero Tarín, Universidad de Oviedo Facultad de Medicina Oviedo SpainLuis H. Luyando, Hospital Universitario Central de Asturias Radiology Department Oviedo SpainJuan Rondán, Hospital Universitario Central de Asturias Cardiology Department Calle Julián Clavería s/n 33006 Oviedo Spai... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2438417 Tue, 26 May 2009 06:01:34 +0100 2438417 http://www.medworm.com/index.php?rid=2430744&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ff06m363070pp4127%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9471-0Authors Cynthia H. McCollough, Mayo Clinic Rochester MN 55905 USA Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2430744 Thu, 21 May 2009 06:14:36 +0100 2430744 http://www.medworm.com/index.php?rid=2430745&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F7642103456457462%2F Abstract  Carotid MRI measurements are increasingly being employed in research studies for atherosclerosis imaging. The majority of carotid imaging studies use 1.5 T MRI. Our objective was to investigate intra-observer and inter-observer variability in carotid measurements using high resolution 3 T MRI. We performed 3 T carotid MRI on 10 patients (age 56 ± 8 years, 7 male) with atherosclerosis risk factors and ultrasound intima-media thickness ≥0.6 mm. A total of 20 transverse images of both right and left carotid arteries were acquired using T2 weighted black-blood sequence. The lumen and outer wall of the common carotid and internal carotid arteries were manually traced; vessel wall area, vessel wall volume, and average wall thick... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2430745 Thu, 21 May 2009 06:14:35 +0100 2430745 http://www.medworm.com/index.php?rid=2420862&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ft67x874162274474%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9467-9Authors E. E. van der Wall, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. D. Schuijf, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The NetherlandsJ. J. Bax, Leiden University Medical Center Department of Cardiology P.O. Box 9600 Leiden The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2420862 Fri, 15 May 2009 06:14:14 +0100 2420862 http://www.medworm.com/index.php?rid=2420863&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fg6n6437r773x5k06%2F We reported the case of a 47-year old female patient. When she was 35-year old an “isolated” CCTGA was diagnosed because of a heart murmur. Since then she attended periodically echocardiograms. She showed us 2 of them where right ventricle apical trabeculation was reported, without any others details. We performed a periodic evaluation in a patient still active, with a 6-month history of mild dyspnea occurring during exertion, no episodes of chest discomfort or palpitation. The ECG showed ectopic atrial rhythm, 83 bpm, normal QRS duration, QS complex in V1–V2 leads. The echocardiogram demonstrated: CCTGA, moderate enlargement and dysfunction of the right systemic ventricle, moderate to severe systemic AV valve regurgitation, severe thinning and dyskinesia of the basal segm... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2420863 Wed, 13 May 2009 06:18:04 +0100 2420863 http://www.medworm.com/index.php?rid=2420864&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Ff425421246x1124n%2F Content Type Journal ArticleCategory Editorial CommentDOI 10.1007/s10554-009-9465-yAuthors Leo H. B. Baur, University of Maastricht Atrium Medical Centre Parkstad Henri Dunantstreet 5 6401 CX Heerlen The Netherlands Journal The International Journal of Cardiovascular Imaging (formerly Cardiac Imaging)Online ISSN 1573-0743Print ISSN 1569-5794 Journal Volume Volume 25 Journal Issue Volume 25, Number 5 / June, 2009 (Source: The International Journal of Cardiovascular Imaging) The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2420864 Tue, 12 May 2009 05:55:17 +0100 2420864 http://www.medworm.com/index.php?rid=2401399&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F8g4xk03636267tj2%2F Abstract  Degenerative aortic valve stenosis (AS) has an incidence of 2–7% in the Western European and North American populations over 65 years of age. The aim of this study was to perform a meta-analysis of the published literature evaluating the accuracy of CT planimetry to measure the aortic valve area. The PUBMED and OVID databases were searched up to May 2008. Major criteria for article inclusion was the use of (a) multi-detector computed tomography as a diagnostic test for the assessment of AVA in patients with AS, and (b) TTE as the reference standard. Nine studies were included in the analysis with 175 women and 262 men. The mean AVA as measured by CT was 1.0 ± 0.1. The mean AVA measured by TTE was 0.9 ± 0.1. The correlation between CT a... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2401399 Thu, 07 May 2009 06:06:32 +0100 2401399 http://www.medworm.com/index.php?rid=2394825&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fuj1lj03x16q34052%2F Abstract  In normal subjects there is a certain corresponding relationship between the peak rotation angle of the apex and the base with respect to the phase of the cardiac cycle. We hypothesized that the myocardial contractile force and the delay of conduction may affect the correspondence of them. Our study aims to use speckle tracking imaging (STI) technique to analyze the relationship between the left ventricular rotation/torsion (LVrot/ LVtor ) characteristics and cardiac cycle phase, to investigate its clinical feasibility. The echocardiographic images of the short-axis view of the left ventricles (LV) at the apical and basal planes were acquired by STI in 32 healthy controls and 48 heart failure patients (New York Heart Association class I or II). LVtor angle, LVrot ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2394825 Tue, 05 May 2009 05:56:39 +0100 2394825 http://www.medworm.com/index.php?rid=2394826&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fk8t15thw403425l1%2F Abstract  The purpose of the study was to evaluate in which phase of the cardiac cycle visualization of the cardiac veins could achieve the highest possible quality. In 138 patients (aged 56.6 ± 10.6; 58F) with a suspicion of CAD, a 64-slice CT (Toshiba Aquilion) was performed. In each case ten 3D volume rendering reconstructions were created from 0 to 90% R–R intervals (step 10%) using a 0.5 mm slice thickness (reconstructions 2.0 mm). An arbitrary score of the quality of images was introduced. In 82 (59.4%) patients optimal image quality was noted at the 40% phase, in 28 (20.3%) at the 30% phase and finally in 14 (10.1%) at the 50% phase. These 3 phases (30/40/50%) were the best option for 124 (89.8% of all) patients. In the rest of the patients the ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2394826 Tue, 05 May 2009 05:56:38 +0100 2394826 http://www.medworm.com/index.php?rid=2358494&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fv15v00x2v8836721%2F Abstract  The aim of the present study was to evaluate the prognostic value of hemodynamic variables during ergometric stress testing for 99mTc-sestamibi myocardial perfusion scintigraphy (MPS) as compared to several patient-related variables and MPS results with regard to referral to early coronary angiography (<3 months after MPS; CA) as well as cardiac event (CE) free survival in a study population aged ≥70 years. About 90 patients aged ≥70 years (74.5 ± 3.6 years) who underwent ergometric stress/rest MPS were included in this study. About 19 hemodynamic variables during stress testing were assessed. Semiquantitative visual interpretation of MPS images were performed and Summed-Stress-(SSS), Summed-Difference-, and Summed-Rest-Scores ... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2358494 Tue, 21 Apr 2009 11:33:50 +0100 2358494 http://www.medworm.com/index.php?rid=2358479&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fv6872882l472l986%2F Abstract  We evaluated the determinants of vessel contrast in prospectively ECG-triggered CT coronary angiography (CTCA). Seventy patients underwent low-dose CTCA using Body Mass Index (BMI)-adapted tube parameters and a fixed contrast material bolus. Contrast to noise ratio (CNR) was calculated from contrast (between coronaries and perivascular tissue) and image noise (standard deviation of aortic attenuation). Cardiac output (CO) was calculated from gated 99mTc-tetrofosmin-SPECT. Mean radiation dose was 2.13 ± 0.69 mSv. Image noise was not affected by BMI (r = 0.1, P = 0.36), while CNR was inversely related to body surface area (BSA) (r = −0.5, P < 0.001) and CO (r = −0.45, P < 0.001). Afte... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2358479 Tue, 21 Apr 2009 11:33:50 +0100 2358479 http://www.medworm.com/index.php?rid=2336972&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fw26lpwwgx57l1336%2F Abstract  In the present paper, vascular calcifications due to chronic renal failure in rats are studied by X-ray microtomography (μ-CT). Although μ-CT is traditionally used as an imaging technique, a quantitative analysis of data obtained by in vivo and ex vivo μ-CT is described and discussed. By comparison with traditional destructive methods, such as histomorphometry and atomic absorption, the detection limits for calcium were determined in living rats and in extracted aortas. μ-CT proved to be an effective non-invasive imaging technique allowing non-destructive quantification of ectopic calcifications. Content Type Journal ArticleCategory Original PaperDOI 10.1007/s10554-009-9459-9Authors A. A. Postnov, University of Antwerp Laboratory of Microtomography Universi... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2336972 Sat, 11 Apr 2009 06:33:00 +0100 2336972 http://www.medworm.com/index.php?rid=2336973&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2F92261m105213x17l%2F In conclusion, LV systolic twist could be significantly improved but diastolic untwisting remained unchanged after transcatheter ASD closure. This improvement was mainly attributed to the improved LV basal rotation rather than the unchanged apical rotation. Content Type Journal ArticleCategory Original PaperDOI 10.1007/s10554-009-9458-xAuthors Lili Dong, Fudan University Department of Echocardiography, Zhongshan Hospital 180 Fenglin Road 200032 Shanghai ChinaFeng Zhang, Shanghai Institute of Cardiovascular Diseases 200032 Shanghai ChinaXianhong Shu, Fudan University Department of Echocardiography, Zhongshan Hospital 180 Fenglin Road 200032 Shanghai ChinaDaxin Zhou, Shanghai Institute of Cardiovascular Diseases 200032 Shanghai ChinaLihua Guan, Shanghai Institute of Cardiovascular Dis... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2336973 Fri, 10 Apr 2009 05:53:57 +0100 2336973 http://www.medworm.com/index.php?rid=2336974&cid=s_33381_37_f&fid=33381&url=http%3A%2F%2Fwww.springerlink.com%2Fcontent%2Fv04212r0673t6654%2F This study sought to evaluate whether representative abnormalities can be identified by first-pass perfusion (FPP) studies in patients with Churg-Strauss Syndrome (CSS), a rare disease characterized by small-vessel vasculitis. Seven patients with CSS (3 men, 4 women; mean age 55 ± 7 years) were investigated. Echocardiography was performed in all patients and coronary angiography in 5 patients. Magnetic resonance imaging (MRI) was performed with a 1.5 T whole body scanner in all patients. Functional cardiac imaging, T2-weighted turbo inversion recovery magnitude images, and T2-weighted turbo spin echo sequences with fat saturation were also performed. Cardiac viability was assessed by myocardial FPP imaging at rest and by delayed contrast enhancement (DCE) images.... The International Journal of Cardiovascular Imaging journals http://www.medworm.com/rss/comments.php?id=2336974 Thu, 09 Apr 2009 06:50:07 +0100 2336974