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 'Journal of Magnetic Resonance Imaging' source. Thu, 09 Feb 2012 03:37:38 +0100 http://www.medworm.com/index.php?rid=5669853&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23570 Conclusion:It is feasible to evaluate the cerebral perfusion by using T1‐weighted DCE‐MRI with the improved kinetic model. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5669853 Tue, 07 Feb 2012 05:00:00 +0100 5669853 http://www.medworm.com/index.php?rid=5669852&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23599 Conclusion:The shortening of the relaxation times observed in the basal ganglia before liver transplantation was caused by paramagnetic ion deposition. The recovery observable within 2 years after transplantation was permanent, and no recurrence of paramagnetic ion deposition was observed even 15 years posttransplantation. Changes in the white matter and thalamus after transplantation were attributed to damage caused by permanent exposure to immunosuppressants. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5669852 Tue, 07 Feb 2012 05:00:00 +0100 5669852 http://www.medworm.com/index.php?rid=5669851&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23598 Conclusion:T2* mapping is a repeatable process that showed differences between the OA subject and control groups. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5669851 Tue, 07 Feb 2012 05:00:00 +0100 5669851 http://www.medworm.com/index.php?rid=5669850&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23574 Conclusion:Percent change in ADC is a reliable and accurate marker for monitoring the effects of antiangiogenic treatment, whereas pretreatment ADC and early changes in ADC (ie, days 0–2) are limited in predicting treatment outcome. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5669850 Tue, 07 Feb 2012 05:00:00 +0100 5669850 http://www.medworm.com/index.php?rid=5669849&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23572 This report provides practical recommendations for the design and execution of multicenter functional MRI (MC‐fMRI) studies based on the collective experience of the Function Biomedical Informatics Research Network (FBIRN). The study was inspired by many requests from the fMRI community to FBIRN group members for advice on how to conduct MC‐fMRI studies. The introduction briefly discusses the advantages and complexities of MC‐fMRI studies. Prerequisites for MC‐fMRI studies are addressed before delving into the practical aspects of carefully and efficiently setting up a MC‐fMRI study. Practical multisite aspects include: (i) establishing and verifying scan parameters including scanner types and magnetic fields, (ii) establishing and monitoring of a scanner quality program, (iii) d... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5669849 Wed, 01 Feb 2012 05:00:00 +0100 5669849 http://www.medworm.com/index.php?rid=5631459&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23594 Conclusion:HPI and portal perfusion could be relevant indicators for the clinical follow‐up in patients with chronic liver diseases. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5631459 Fri, 27 Jan 2012 08:29:14 +0100 5631459 http://www.medworm.com/index.php?rid=5631467&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23576 Conclusion:The work presented here allows for T1 map determination with higher resolution and shorter acquisition time than previously possible. The technique is especially well suited for GM/WM T1 mapping. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5631467 Thu, 26 Jan 2012 05:00:00 +0100 5631467 http://www.medworm.com/index.php?rid=5631466&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23543 Conclusion:Black‐blood SSFP coronary wall MRI provides higher image quality, SNR, and CNR than traditional TSE does in HTx recipients. It has the potential to become an alternative means to noninvasive imaging of cardiac allografts. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5631466 Thu, 26 Jan 2012 05:00:00 +0100 5631466 http://www.medworm.com/index.php?rid=5631465&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23593 Conclusion:S0‐fitting is a postprocessing method that can provide a best estimate of high R values that cannot be characterized by conventional relaxometry. The method can be applied to conventional MGE datasets and was shown to be beneficial for quantification of high local concentrations of holmium‐loaded microspheres. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5631465 Thu, 26 Jan 2012 05:00:00 +0100 5631465 http://www.medworm.com/index.php?rid=5631464&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23592 Conclusion:The fibrosis index is increased in patients with PA and the increase imposes an adverse effect on LV diastolic function. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5631464 Thu, 26 Jan 2012 05:00:00 +0100 5631464 http://www.medworm.com/index.php?rid=5631463&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23590 Conclusion:In this preliminary study, ADC was significantly different between cases of high‐grade urothelial carcinoma of the bladder with and without metastatic disease. These results may have value in assessing the metastatic potential of patients with localized high‐grade tumors of the bladder. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5631463 Thu, 26 Jan 2012 05:00:00 +0100 5631463 http://www.medworm.com/index.php?rid=5631462&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23588 Conclusion:Accelerated dual Venc 4D PC‐MRI was demonstrated in vitro and in vivo. This acquisition scheme is well suited for vascular territories with wide ranges of flow velocities such as congenital heart disease, the hepatic vasculature, and others. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5631462 Thu, 26 Jan 2012 05:00:00 +0100 5631462 http://www.medworm.com/index.php?rid=5631461&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23571 Conclusion:B1 homogeneity is improved with dual‐source parallel RF excitation on 3T breast MRI when compared with standard single‐source RF excitation technique. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5631461 Thu, 26 Jan 2012 05:00:00 +0100 5631461 http://www.medworm.com/index.php?rid=5631460&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23600 Conclusion:The results suggest Gaussian normalization of leakage‐corrected CBV maps may be the best choice for image intensity correction for use in large‐scale, multicenter clinical trials where MR scanners and protocols vary widely due to ease of implementation, lowest variability, and highest tumor to normal tissue contrast. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5631460 Thu, 26 Jan 2012 05:00:00 +0100 5631460 http://www.medworm.com/index.php?rid=5621930&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22786 AbstractDiffusion‐weighted MRI (DWI) allows the detection of malignancies in the abdomen and pelvis. Lesion detection and characterization using DWI largely depends on the increased cellularity of solid or cystic lesions compared with the surrounding tissue. This increased cellularity leads results in restricted diffusion as indicated by reduction in the apparent diffusion coefficient (ADC). Low pretreatment ADC values of several malignancies have been shown to be predictive of better outcome. DWI can assess response to systemic or regional treatment of cancer at a cellular level and will therefore detect successful treatment earlier than anatomical measures. In this review, we provide a brief technical overview of DWI, discuss quantitative image analysis approaches, and review studies w... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5621930 Tue, 24 Jan 2012 08:15:39 +0100 5621930 http://www.medworm.com/index.php?rid=5621929&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22825 AbstractMagnetic resonance imaging (MRI and single‐photon emission computed tomography (SPECT) have a considerable role in the diagnosis of the single patient with movement disorders. Conventional MRI demonstrates symptomatic causes of parkinsonism but does not show any specific finding in Parkinson's disease (PD). However, SPECT using tracers of the dopamine transporter (DAT) demonstrates an asymmetric decrease of the uptake in the putamen and caudate from the earliest clinical stages. In other degenerative forms of parkinsonism, including progressive supranuclear palsy (PSP), multisystem atrophy (MSA), and corticobasal degeneration (CBD), MRI reveals characteristic patterns of regional atrophy combined with signal changes or microstructural changes in the basal ganglia, pons, middle an... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5621929 Tue, 24 Jan 2012 08:15:38 +0100 5621929 http://www.medworm.com/index.php?rid=5621928&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23559 (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5621928 Tue, 24 Jan 2012 08:15:37 +0100 5621928 http://www.medworm.com/index.php?rid=5621927&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23547 AbstractMagnetic resonance imaging (MRI and single‐photon emission computed tomography (SPECT) have a considerable role in the diagnosis of the single patient with movement disorders. Conventional MRI demonstrates symptomatic causes of parkinsonism but does not show any specific finding in Parkinson's disease (PD). However, SPECT using tracers of the dopamine transporter (DAT) demonstrates an asymmetric decrease of the uptake in the putamen and caudate from the earliest clinical stages. In other degenerative forms of parkinsonism, including progressive supranuclear palsy (PSP), multisystem atrophy (MSA), and corticobasal degeneration (CBD), MRI reveals characteristic patterns of regional atrophy combined with signal changes or microstructural changes in the basal ganglia, pons, middle an... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5621927 Tue, 24 Jan 2012 08:15:35 +0100 5621927 http://www.medworm.com/index.php?rid=5621923&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22856 Conclusion:Flow‐sensitive 4D MRI allows for estimating aortic PWV with low observer dependence and moderate test–retest reliability. PWV in patients correlated with age, aortic valve insufficiency, and pulse pressure. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5621923 Tue, 24 Jan 2012 08:13:30 +0100 5621923 http://www.medworm.com/index.php?rid=5621926&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23591 Conclusion:The proposed real‐time MRI technique yields noninvasive, robust, and quantitative access to the physiology of normal swallowing in healthy subjects at high temporal resolution and image quality. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5621926 Mon, 23 Jan 2012 05:00:00 +0100 5621926 http://www.medworm.com/index.php?rid=5621925&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23589 Conclusion:Lower ADC values were associated with a more aggressive tumor profile. Significant correlations were found between mean ADC values and radiological MRF status, N stage and differentiation grade. ADC has the potential to become an imaging biomarker of tumor aggressiveness profile. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5621925 Mon, 23 Jan 2012 05:00:00 +0100 5621925 http://www.medworm.com/index.php?rid=5621924&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22861 We report the comprehensive evaluation of the complex hemodynamics in a rare case of a pediatric patient after repair of congenital heart disease with multiple abnormalities including hypoplastic left heart, double outlet right ventricle, transposition of great arteries, ventricular septal defect, aortic coarctation, and total cavopulmonary connection. Based on a single measurement, whole‐heart flow‐sensitive 4D magnetic resonance imaging (MRI) was able to demonstrate a number of regional flow alterations such as poststenotic helix formation and asymmetric flow distributions for the double arterial outlet and to the left and right lungs. Our findings illustrate the potential role of flow‐sensitive 4D MRI as a noninvasive and radiation‐free technique for the frequent postinterventio... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5621924 Mon, 23 Jan 2012 05:00:00 +0100 5621924 http://www.medworm.com/index.php?rid=5612588&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23584 Conclusion:Gd‐EOB‐DTPA is superior to Gd‐DTPA for detecting HCC in contrast agent‐enhanced MRI in the c‐myc/TGFα transgenic mouse model and there was no difference between the hyperintense or hypointense appearance of HCC. Either way, HCCs can easily be distinguished from liver parenchyma in mice. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5612588 Fri, 20 Jan 2012 05:00:00 +0100 5612588 http://www.medworm.com/index.php?rid=5612587&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23540 Conclusion:Dynamic contrast enhanced imaging and diffusion tensor imaging, when used within the framework of supervised classification, can play a role in characterizing prostate cancer. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5612587 Fri, 20 Jan 2012 05:00:00 +0100 5612587 http://www.medworm.com/index.php?rid=5586693&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23579 Conclusion:These findings confirm large between subject variability in CBF measurements, but suggest also that in healthy subjects a subject‐method interaction is a possible source of between subject variability and of method differences. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586693 Fri, 13 Jan 2012 05:00:00 +0100 5586693 http://www.medworm.com/index.php?rid=5586692&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23577 Conclusion:The proposed evaluation of cardiac BOLD magnetic resonance imaging (MRI) offers marked improvement in sensitivity and specificity for detecting critical coronary stenosis at 1.5T compared to the mean segmental intensity approach. Patient studies are now warranted to determine its clinical utility. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586692 Fri, 13 Jan 2012 05:00:00 +0100 5586692 http://www.medworm.com/index.php?rid=5586691&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23575 Conclusion:The Amplatzer occluder itself does not change the ventricular contraction pattern. All volume and myocardial deformation changes were caused by ventricular loading shifts. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586691 Fri, 13 Jan 2012 05:00:00 +0100 5586691 http://www.medworm.com/index.php?rid=5586690&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23573 Conclusion:T2WI and DWI are complementary in discriminating benign from malignant FLLs; their combination improves diagnostic confidence. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586690 Fri, 13 Jan 2012 05:00:00 +0100 5586690 http://www.medworm.com/index.php?rid=5586689&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23541 Conclusion:The newly developed MR compatible CTG could be used as a tool for cardiac triggering method of the fetal heart. This novel device might help fetal cardiac MRI technology in the future. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586689 Fri, 13 Jan 2012 05:00:00 +0100 5586689 http://www.medworm.com/index.php?rid=5586688&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23587 Conclusion:The targeted biopsy strategy based on ADC maps can be useful in the detection and localization of prostate cancer with high PPV. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586688 Fri, 13 Jan 2012 05:00:00 +0100 5586688 http://www.medworm.com/index.php?rid=5586687&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23586 Conclusion:For PASL at 3T, the 32‐channel coil at 3T provided better quality than the 12‐channel coil. With the 32‐channel coil, mSENSE 2 seemed to offer the best compromise for decreasing artifacts without significantly reducing SNR, CNR. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586687 Fri, 13 Jan 2012 05:00:00 +0100 5586687 http://www.medworm.com/index.php?rid=5586686&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23585 Conclusion:MRE is a noninvasive, accurate, and reproducible technique compared with conventional features of detecting severe hepatic fibrosis. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586686 Fri, 13 Jan 2012 05:00:00 +0100 5586686 http://www.medworm.com/index.php?rid=5586685&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23583 Conclusion:The present study shows an approximately linear field strength dependence of ΔR2* in the skeletal muscle in response to ischemia and reactive hyperemia. Using higher magnetic fields is advisable for future BOLD imaging studies of peripheral limb pathologies. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586685 Fri, 13 Jan 2012 05:00:00 +0100 5586685 http://www.medworm.com/index.php?rid=5586684&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23582 Conclusion:Water‐saturated MRI sequences at 3.0 T for VAT quantification improve reproducibility and decrease variability compared with nonwater saturated sequences, especially with the use of automatic quantification methods. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586684 Fri, 13 Jan 2012 05:00:00 +0100 5586684 http://www.medworm.com/index.php?rid=5586683&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23581 AbstractPerfusion provides oxygen and nutrients to tissues and is closely tied to tissue function while disorders of perfusion are major sources of medical morbidity and mortality. It has been almost two decades since the use of arterial spin labeling (ASL) for noninvasive perfusion imaging was first reported. While initial ASL magnetic resonance imaging (MRI) studies focused primarily on technological development and validation, a number of robust ASL implementations have emerged, and ASL MRI is now also available commercially on several platforms. As a result, basic science and clinical applications of ASL MRI have begun to proliferate. Although ASL MRI can be carried out in any organ, most studies to date have focused on the brain. This review covers selected research and clinical appli... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586683 Fri, 13 Jan 2012 05:00:00 +0100 5586683 http://www.medworm.com/index.php?rid=5586682&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23534 AbstractArteriovenous malformations (AVM) can be treated with stereotactic radiosurgery. An infrequent, but important complication of this treatment is radionecrosis, which can be detected by MRI. However, the imaging characteristics of necrosis are unspecific in conventional MRI. Here, we report a case of necrosis after radiotherapy of an AVM to illustrate the potential of 7 Tesla MRI including amide proton transfer (APT) for necrosis imaging. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586682 Fri, 13 Jan 2012 05:00:00 +0100 5586682 http://www.medworm.com/index.php?rid=5586681&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23513 Conclusion:Gadofluorine M‐enhanced images provided greater specificity than DWI for identifying LN metastases, whereas the Az and sensitivity of the former were comparable to those of the latter. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586681 Fri, 13 Jan 2012 05:00:00 +0100 5586681 http://www.medworm.com/index.php?rid=5586680&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23511 Conclusion:As demonstrated by DW‐MRI, intravenous iopamidol injection resulted in a successive reduction of intrarenal water diffusion, particularly in IS of kidney. This MR technique may be used as a noninvasive tool to perform a time course study of the pathogenesis associated with contrast‐induced nephropathy (CIN). J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586680 Fri, 13 Jan 2012 05:00:00 +0100 5586680 http://www.medworm.com/index.php?rid=5586679&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22872 Conclusion:The single volumetric acquisition with uniform water and silicone separation enables images to be reformatted into any orientation. This allows comprehensive assessment of breast implant integrity in less than 10 min of total examination time. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586679 Fri, 13 Jan 2012 05:00:00 +0100 5586679 http://www.medworm.com/index.php?rid=5586695&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23542 Conclusion:Considering parallel transmission, the recommended values of local 10‐g SAR may remain a relevant metric to ensure that the local temperature inside the human head never exceeds 39°C, although it can lead to rises larger than 1°C in the eye. Monitoring temperature instead of SAR can provide increased flexibility in pulse design for parallel transmission. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586695 Thu, 12 Jan 2012 05:00:00 +0100 5586695 http://www.medworm.com/index.php?rid=5586694&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23539 Conclusion:Using a standardized multimodal qMRI acquisition and analyses that accounted for lesion distribution we demonstrate that cerebral pathology is widespread in RRMS. Our analysis of CC and neocortex qMRI metrics in relation to disability points to a neurodegenerative injury component that is independent from lesions. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586694 Thu, 12 Jan 2012 05:00:00 +0100 5586694 http://www.medworm.com/index.php?rid=5612586&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22851 Conclusion:Cine MRI of the bowel provides functional information of bowel passage. The visualization of a reduction in peristalsis may improve the assessment of the functional impact of suspected bowel adhesions or stenosis. Standard bowel MR protocols can be easily complemented by cine MR, extending scan time by <4 minutes. J. Magn. Reson. Imaging 2012;. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5612586 Sun, 01 Jan 2012 05:00:00 +0100 5612586 http://www.medworm.com/index.php?rid=5586678&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23516 Conclusion:The fully automatic CAD technique seems to reliably distinguish between benign and malignant mass‐like breast tumors. Observer‐independent CAD may be a promising additional tool for the interpretation of breast MRI in the clinical routine. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5586678 Sun, 01 Jan 2012 05:00:00 +0100 5586678 http://www.medworm.com/index.php?rid=5507933&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22859 (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507933 Fri, 16 Dec 2011 20:40:03 +0100 5507933 http://www.medworm.com/index.php?rid=5507932&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22860 (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507932 Fri, 16 Dec 2011 20:40:02 +0100 5507932 http://www.medworm.com/index.php?rid=5507931&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22790 AbstractMultiparametric magnetic resonance imaging (MRI) has the potential of being the ideal prostate cancer (PCa) assessment tool. Information gathered with multiparametric MRI can serve therapy choice, guidance of interventions, and treatments. The purpose of this review is to discuss the potential role of multiparametric MRI in focal therapy with respect to patient selection and directing (robot‐guided) biopsies and intensity‐modulated radiation therapy (IMRT). Multiparametric MRI is a versatile and promising technique. It appears to be the best available imaging technique at the moment in localizing, staging (primary as well as recurrent disease, and local as well as distant disease), determining aggressiveness, and volume of PCa. However, larger study populations in multicenter s... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507931 Fri, 16 Dec 2011 20:39:29 +0100 5507931 http://www.medworm.com/index.php?rid=5507930&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22789 This article introduces other established NC‐MRA techniques, such as ECG‐gated partial Fourier fast spin echo (FSE) and balanced steady‐state free precession (bSSFP), both with and without arterial spin labeling. Then, the article focuses on two main applications: peripheral run‐off and renal MRA. Recently, both applications have achieved remarkable advancements and have become a viable clinical option as an alternative to contrast‐enhanced (CE)‐MRA. In addition, developments on the horizon including whole body MRA applications and further advancement at 3 Tesla are discussed. J. Magn. Reson. Imaging 2012;35:1‐19. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507930 Fri, 16 Dec 2011 20:39:28 +0100 5507930 http://www.medworm.com/index.php?rid=5507929&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23558 (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507929 Fri, 16 Dec 2011 20:39:27 +0100 5507929 http://www.medworm.com/index.php?rid=5507928&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23546 This article introduces other established NC‐MRA techniques, such as ECG‐gated partial Fourier fast spin echo (FSE) and balanced steady‐state free precession (bSSFP), both with and without arterial spin labeling. Then, the article focuses on two main applications: peripheral run‐off and renal MRA. Recently, both applications have achieved remarkable advancements and have become a viable clinical option as an alternative to contrast‐enhanced (CE)‐MRA. In addition, developments on the horizon including whole body MRA applications and further advancement at 3 Tesla are discussed. J. Magn. Reson. Imaging 2012 © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507928 Fri, 16 Dec 2011 20:39:25 +0100 5507928 http://www.medworm.com/index.php?rid=5507911&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23537 Conclusion:In the absence of graft dysfunction, DWI and BOLD imaging yield consistent results over 3 years in stable human renal allograft recipients. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507911 Fri, 16 Dec 2011 20:37:26 +0100 5507911 http://www.medworm.com/index.php?rid=5507917&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23533 Conclusion:Noninvasive visualization of pancreatic juice movement is possible by using the unenhanced MR imaging time‐SLIP technique. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507917 Fri, 16 Dec 2011 05:00:00 +0100 5507917 http://www.medworm.com/index.php?rid=5507916&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23531 We report the unique depiction of brown adipose tissue (BAT) by magnetic resonance imaging (MRI) and computed tomography (CT) in a human 3‐month‐old infant. Based on cellular differences between BAT and more lipid‐rich white adipose tissue (WAT), chemical‐shift MRI and CT were both capable of generating distinct signal contrasts between the two tissues and against surrounding anatomy, utilizing fat‐signal fraction metrics in the former and x‐ray attenuation values in the latter. While numerous BAT imaging experiments have been performed previously in rodents, the identification of BAT in humans has only recently been described with fusion positron emission and computed tomography in adults. The imaging of BAT in children has not been widely reported and, furthermore, MRI of hum... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507916 Fri, 16 Dec 2011 05:00:00 +0100 5507916 http://www.medworm.com/index.php?rid=5507915&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23530 We report what is known of these risks in various imaging scenarios. The use of Radiology Business Managers is described as a means adopted to control overuse and the limitations of this strategy. The imperative of appropriate utilization is focused on, with emphasis placed on computer‐based medical decision support. Impediments to appropriate use, however, exist, with concerns of medicolegal liability high on the list of these issues. Finally, we recommend that radiologists take the lead in the reform process by implementing strategies such as decision support. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507915 Fri, 16 Dec 2011 05:00:00 +0100 5507915 http://www.medworm.com/index.php?rid=5507914&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23521 Conclusion:The presented approach improves the flexibility and efficiency of acquisitions of multiple voxels, i.e., can shorten acquisition times accordingly, and can help to reduce partial volume effects. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507914 Fri, 16 Dec 2011 05:00:00 +0100 5507914 http://www.medworm.com/index.php?rid=5507913&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23545 Conclusion:By using the ARMA model on complex mGRE images, both susceptibility and R‐based LIC measurements can be made simultaneously. The susceptibility measurement can be used to help verify R measurements in the assessment of iron overload. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507913 Fri, 16 Dec 2011 05:00:00 +0100 5507913 http://www.medworm.com/index.php?rid=5507912&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23538 Conclusion:Despite the high asymmetry of a 2D truncated k‐space, the proposed approach allows for accurate reconstruction without the need of phase correction and, thus, overcomes the assumption of slow phase variations that is usually required by the existing reconstruction methods. It provides a new way of fast imaging for applications that require a significant reduction of the acquisition time. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507912 Fri, 16 Dec 2011 05:00:00 +0100 5507912 http://www.medworm.com/index.php?rid=5507927&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23524 Conclusion:The presence of liver‐vessel cancellation artifact around intra‐hepatic vessels is a feature of ultra‐high liver fat content. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507927 Wed, 14 Dec 2011 05:00:00 +0100 5507927 http://www.medworm.com/index.php?rid=5507926&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23522 Conclusion:Tilting the excitation plane and applying variable gradient amplitudes improves the applicability of inner FOV EPI based on 2D‐selective RF excitations. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507926 Wed, 14 Dec 2011 05:00:00 +0100 5507926 http://www.medworm.com/index.php?rid=5507925&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23519 Conclusion:ADC significantly decreases in patients with >5% HFF, and ADC and HFF exhibit an inverse relationship. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507925 Wed, 14 Dec 2011 05:00:00 +0100 5507925 http://www.medworm.com/index.php?rid=5507924&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23507 Conclusion:These novel data confirm the potential of functional MRI methods to map histopathologically proven changes in breast tumor vasculature and microenvironment in vivo. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507924 Wed, 14 Dec 2011 05:00:00 +0100 5507924 http://www.medworm.com/index.php?rid=5507923&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22842 Conclusion:Our MRI algorithm produces accurate tissue quantification, is less labor‐intensive, and more reproducible than the original CT‐based workflow and can address interparticipant anatomic variability and intensity inhomogeneity effects. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507923 Wed, 14 Dec 2011 05:00:00 +0100 5507923 http://www.medworm.com/index.php?rid=5507922&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23532 Conclusion:FLAWS provides two coregistered 3D volumes, one with nulled WM signal intensity and another with nulled cerebrospinal fluid. The coregistered nature of the two datasets allows for generating images that might be helpful in segmentation algorithms and clinical diagnosis. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507922 Wed, 14 Dec 2011 05:00:00 +0100 5507922 http://www.medworm.com/index.php?rid=5507921&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23529 Conclusion:The results of this preliminary study show MR‐HIFU has the ability to create palpable lesions in ex vivo cadaveric breast tissue, and may potentially be used to preoperatively localize nonpalpable breast tumors. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507921 Wed, 14 Dec 2011 05:00:00 +0100 5507921 http://www.medworm.com/index.php?rid=5507920&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23528 Conclusion:Although excellent in‐plane coronary vessel wall images can be acquired at 3T, the overall robustness may be affected by off‐resonance blurring due to increased B0 inhomogeneity compared with 1.5T. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507920 Wed, 14 Dec 2011 05:00:00 +0100 5507920 http://www.medworm.com/index.php?rid=5507919&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23527 Conclusion:Repeatability of ΔV calculated from tCBF, tJBF, and CSF waveforms allows useful interpretations. The subject's time in the MR system and imaging resolution should be considered when interpreting volume changes. Summed CSF and venous volume changes was associated with arterial volume changes. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507919 Wed, 14 Dec 2011 05:00:00 +0100 5507919 http://www.medworm.com/index.php?rid=5507918&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23526 Conclusion:The temperature and thermal dose measured using MR thermometry during pulsed HIFU treatment is probably sufficient in most instances. Simple corrections may be used to calculate an upper bound where this is a critical factor. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5507918 Wed, 14 Dec 2011 05:00:00 +0100 5507918 http://www.medworm.com/index.php?rid=5479407&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23535 Conclusion:Single breathhold NC‐MRA is feasible and can be a useful alternative for evaluation and follow‐up of thoracic aortic diseases. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5479407 Tue, 06 Dec 2011 05:00:00 +0100 5479407 http://www.medworm.com/index.php?rid=5479406&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22874 Conclusion:Thus, the FSE‐PEDRI pulse sequence enables fast in vivo functional imaging of free radical probes in small animals greatly reducing EPR irradiation time with decreased power deposition and provides increased temporal resolution. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5479406 Tue, 06 Dec 2011 05:00:00 +0100 5479406 http://www.medworm.com/index.php?rid=5479405&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22839 Conclusion:DB‐MRI of carotid arteries using T2w‐SPACE is clinically feasible. It provides accurate measurements of lumen size and degree of stenosis in comparison with ceMRA and offers a more reproducible measure of ECST stenosis than ceMRA. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5479405 Thu, 01 Dec 2011 05:00:00 +0100 5479405 http://www.medworm.com/index.php?rid=5461102&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23502 Conclusion:MR imaging can be used as an adjunct to US in the prenatal diagnosis of fetal anomalies of not only the CNS but also the non‐CNS origin especially those involving the GIS, GUS and thorax. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461102 Thu, 01 Dec 2011 05:00:00 +0100 5461102 http://www.medworm.com/index.php?rid=5461117&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23525 Conclusion:Our study confirmed the improvement in clinical evaluation, and for the first time related this to the changes in discs GAG concentration. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461117 Tue, 29 Nov 2011 05:00:00 +0100 5461117 http://www.medworm.com/index.php?rid=5461116&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23520 Conclusion:Kevlar and short nitinol component substitutions preserved mechanical properties. The active design offered the best visibility and usability but reintroduced metal conductors. We describe versatile deflectable guiding catheters with a 0.057” lumen for interventional MRI catheterization. Implementations are feasible using active, inductive, and passive visualization strategies to suit application requirements. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461116 Tue, 29 Nov 2011 05:00:00 +0100 5461116 http://www.medworm.com/index.php?rid=5461115&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23518 Conclusion:Higher image quality and improved lesion detectability were present with IP/OP MP‐GRE technique. Inversion‐recovery prepared techniques may represent an important evolution for precontrast T1‐weighted image at 3.0T. The good image quality of MP‐GRE sequences acquired in a free breathing manner should recommend its use in patients unable to suspend breathing. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461115 Tue, 29 Nov 2011 05:00:00 +0100 5461115 http://www.medworm.com/index.php?rid=5461114&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23517 AbstractTo find imaging signs of active degenerative processes in vanishing white matter disease (VWM), six VWM patients and six matched controls underwent MR examinations. The data were analyzed with modified Scheltens scales for morphological findings and determined quantitatively for apparent diffusion coefficient (ADC). Single‐voxel MR spectra were acquired at the parietal white matter and analyzed with LCModel. Typical VWM brain lesions were found in all patients accompanied by proton diffusion abnormalities: Increased ADC appeared in brain regions with severe myelin destruction in all patients, and reduced ADC in two of six younger patients in remaining white matter adjacent to the lesions or at the borders around the lesions, who had a short history of the disease (≤ 1 year). Th... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461114 Tue, 29 Nov 2011 05:00:00 +0100 5461114 http://www.medworm.com/index.php?rid=5461113&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23510 Conclusion:Real‐time MRI of multiple intersecting slices can provide valuable spatial and temporal information about vocal tract shaping, including details not observable from a single slice. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461113 Tue, 29 Nov 2011 05:00:00 +0100 5461113 http://www.medworm.com/index.php?rid=5461112&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23509 Conclusion:We demonstrated that renal dynamic contrast enhanced magnetic resonance imaging using BLADE k‐space sampling with a strip‐width of 32 is significantly less sensitive to motion than a widely published Turbo‐Flash sequence with nearly similar parameters. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461112 Tue, 29 Nov 2011 05:00:00 +0100 5461112 http://www.medworm.com/index.php?rid=5461111&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22873 Conclusion:Anisotropy is evident in the anal canal with good inter‐rater agreement and test reproducibility. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461111 Tue, 29 Nov 2011 05:00:00 +0100 5461111 http://www.medworm.com/index.php?rid=5461110&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22892 AbstractThe purpose of this study was to evaluate possible central nervous system (CNS) involvement in Rendu–Osler–Weber (ROW) disease in magnetic resonance imaging (MRI). Three patients with symptomatic ROW disease underwent brain MRI. Brain MRI depicted in all three of them increased signal intensity on T1‐weighted images involving the globus pallidus and cerebral crura bilaterally. Laboratory studies of the two men showed iron deficiency anemia, while all three of them had normal liver function tests and increased manganese blood concentration. Gastroscopy and colonoscopy revealed a gastric and a cecal arteriovenous malformation (AVM) in the first one, while pulmonary and hepatic computed tomography (CT) angiography did not detect any intrahepatic shunts. Liver ultrasound in the s... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461110 Tue, 29 Nov 2011 05:00:00 +0100 5461110 http://www.medworm.com/index.php?rid=5461109&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22890 Conclusion:Hepatic fat‐fraction measured using a T‐corrected chemical shift‐based fat‐water separation method was validated in an animal model of steatosis and iron overload. T correction enables robust fat‐fraction estimation in both the presence and absence of iron, and is necessary for accurate hepatic fat quantification. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461109 Tue, 29 Nov 2011 05:00:00 +0100 5461109 http://www.medworm.com/index.php?rid=5461108&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22886 Conclusion:The combination of 3D imaging sequences (TOF, MP‐RAGE, and MERGE) can provide sufficient contrast to distinguish NC, CA, and LM. Automatic segmentation using 3D sequences and traditional multicontrast protocol produced highly similar results. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461108 Tue, 29 Nov 2011 05:00:00 +0100 5461108 http://www.medworm.com/index.php?rid=5461107&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22884 Conclusion:Our findings support the hypothesis that the absence of the “tiger's eye” in PKAN might be secondary, probably caused by an increased accumulation of iron. This could artificially increase FA and MD values and change fiber tracking results. Except for the fronto‐basal tracts, white matter was preserved well. This encouraging finding might support efforts to develop further therapeutic strategies in this devastating dystonia. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461107 Tue, 29 Nov 2011 05:00:00 +0100 5461107 http://www.medworm.com/index.php?rid=5461106&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22867 Conclusion:The data presented demonstrate that T1ρ MRI is highly reproducible in this spontaneous model of OA and may serve as a noninvasive tool to characterize joint cartilage degeneration during OA. Age‐dependent changes, verified with histological measurements of proteoglycan loss, correlated with T1ρ across different age groups. T1ρ has adequate dynamic range and is sensitive to detect and track the progression of cartilage degeneration in the guinea pig model before gross anatomical changes such as cartilage thinning has occurred. This study presents a technological advancement that would permit longitudinal studies of evaluating disease‐modifying therapies useful for treating human OA. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461106 Tue, 29 Nov 2011 05:00:00 +0100 5461106 http://www.medworm.com/index.php?rid=5461105&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23515 Conclusion:Inflow enhanced inversion recovery cardiac‐triggered 3D FSE imaging can be used for supraaortic artery imaging without contrast agents. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461105 Tue, 29 Nov 2011 05:00:00 +0100 5461105 http://www.medworm.com/index.php?rid=5461104&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23514 Conclusion:Peripheral low intensity sign is not specific for malignant tumors, and can be seen even in hepatic hemangiomas on HP of Gd‐EOB‐DTPA‐enhanced MRI. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461104 Tue, 29 Nov 2011 05:00:00 +0100 5461104 http://www.medworm.com/index.php?rid=5461103&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23512 Conclusion:Chemical shift‐based water/fat separation enables the quantification of fat volume within localized muscle regions, showing that the IMAT regional distribution is significantly different in T2DM compared to normal controls. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5461103 Tue, 29 Nov 2011 05:00:00 +0100 5461103 http://www.medworm.com/index.php?rid=5424560&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22889 (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5424560 Sat, 19 Nov 2011 20:44:07 +0100 5424560 http://www.medworm.com/index.php?rid=5424559&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22787 AbstractThe purpose of this study is to review the MR spectroscopic literature regarding schizophrenia. However, as there are over 250 primary MRS articles and dozens of MRS review articles on the subject already, this study will take a different approach. First, the clinical features of schizophrenia will be described. The background neuroanatomy and biochemistry relevant to schizophrenia will be reviewed, as many readers of this journal are unlikely to be familiar with these fields. A current model of the abnormal neural circuitry in schizophrenia will be presented, and predictions extrapolated about relevant metabolite changes over time. Finally, the existing MRS literature will be reviewed in the context of our existing anatomical and chemical knowledge, and future MRS research directi... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5424559 Sat, 19 Nov 2011 20:43:36 +0100 5424559 http://www.medworm.com/index.php?rid=5424558&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22737 AbstractAcute coronary syndromes (ACS) continue to be the most common morbid condition of industrialized nations. The advent of and technical improvements in revascularization and medical therapy have led to a steady decline in mortality rates. However, many patients who suffer unstable angina or myocardial infarction require further testing and risk stratification to guide therapeutic selection and prognosis assignment. Myocardial edema imaging with cardiac magnetic resonance (CMR) affords the ability to define the amount of myocardium at risk, refine estimates of prognosis and provide guidance for therapies with excellent sensitivity compared with standard clinical markers. This review will discuss the rationale for edema imaging, how it is performed using CMR, and potential clinical app... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5424558 Sat, 19 Nov 2011 20:43:35 +0100 5424558 http://www.medworm.com/index.php?rid=5424557&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22780 (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5424557 Sat, 19 Nov 2011 20:43:34 +0100 5424557 http://www.medworm.com/index.php?rid=5424556&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22779 AbstractAcute coronary syndromes (ACS) continue to be the most common morbid condition of industrialized nations. The advent of and technical improvements in revascularization and medical therapy have led to a steady decline in mortality rates. However, many patients who suffer unstable angina or myocardial infarction require further testing and risk stratification to guide therapeutic selection and prognosis assignment. Myocardial edema imaging with cardiac magnetic resonance (CMR) affords the ability to define the amount of myocardium at risk, refine estimates of prognosis and provide guidance for therapies with excellent sensitivity compared with standard clinical markers. This review will discuss the rationale for edema imaging, how it is performed using CMR, and potential clinical app... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5424556 Sat, 19 Nov 2011 20:43:33 +0100 5424556 http://www.medworm.com/index.php?rid=5412654&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23508 Conclusion:RCFF can be used to quantitatively assess adipose tissue volumes and hepatic fat fractions in rodent models at 7T. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5412654 Wed, 16 Nov 2011 05:00:00 +0100 5412654 http://www.medworm.com/index.php?rid=5412653&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23506 Conclusion:A 28‐Ch knee coil provides increased SNR/CNR for 7T cartilage morphologic imaging and T2 mapping. Coils should be switched with caution during clinical studies because T2 values may differ. The greater SNR of the 28‐Ch coil could be used to perform parallel imaging with AF2 and obtain similar SNR as the quadrature coil. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5412653 Wed, 16 Nov 2011 05:00:00 +0100 5412653 http://www.medworm.com/index.php?rid=5412652&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23505 Conclusion:Care must be taken in the interpretation of ASL‐CBF measurements in SCD patients. A long postlabeling delay with blood velocity correction anticipates overestimation of CBF asymmetries. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5412652 Wed, 16 Nov 2011 05:00:00 +0100 5412652 http://www.medworm.com/index.php?rid=5412651&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23503 Conclusion:We have demonstrated a promising non‐CE MRA method for acquiring renal angiograms within a breathhold without any compromise in spatial resolution or coverage. ECG‐gated NORISKS is able to acquire renal angiograms that are comparable to a routine clinical non‐CE MRA method (Inhance IFIR, GE Healthcare), which requires approximately seven times the scan time of NORISKS. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5412651 Wed, 16 Nov 2011 05:00:00 +0100 5412651 http://www.medworm.com/index.php?rid=5412650&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23501 Conclusion:PC SOS is a promising method for obtaining volumetric angiograms and cine phase contrast velocity measurements in three dimensions. Acquired spatial resolutions of 0.4 × 0.4 × (0.7–1.0) mm make this method especially promising for studying flow in small intracranial aneurysms. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5412650 Wed, 16 Nov 2011 05:00:00 +0100 5412650 http://www.medworm.com/index.php?rid=5412649&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.23500 Conclusion:The 4D flow analysis revealed marked differences of the aortic flow patterns between Marfan patients and controls: Local helix flow in the patients' AAo may be associated with the increased incidence of aortic root dilatation. The flow alterations in the proximal DAo could explain the occurrence of Type‐B dissection originating from this site. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5412649 Wed, 16 Nov 2011 05:00:00 +0100 5412649 http://www.medworm.com/index.php?rid=5412648&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22893 Conclusion:Accumulation of GBCA in breast cancer could affect the choline peak on MRS. MRS of breast cancer at 3.0‐T can be recommended to be acquired before contrast‐enhanced study; however, some problems remain in VOI placement with reference to the noncontrast‐enhanced study. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5412648 Wed, 16 Nov 2011 05:00:00 +0100 5412648 http://www.medworm.com/index.php?rid=5412647&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22883 Conclusion:Exposure to SMFs up to 13T caused neither mutagenicity nor co‐mutagenicity in the SOD‐deficient E. coli strain QC774 or in its parental strain GC4468, suggesting that exposure to strong SMFs does not affect the behavior of superoxides in these microorganisms. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5412647 Wed, 16 Nov 2011 05:00:00 +0100 5412647 http://www.medworm.com/index.php?rid=5412646&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22882 Conclusion:Nonenhanced MR imaging by an ASL technique is valid for depicting breast cancer, and the MR perfusion value is thought to be helpful for quantitative diagnosis of breast cancer. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5412646 Wed, 16 Nov 2011 05:00:00 +0100 5412646 http://www.medworm.com/index.php?rid=5412645&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22880 Conclusion:Regardless of size or prior chemotherapy, detection of hepatic metastases was significantly improved by adding hepatobiliary phase images without significant differences between 10‐ and 20‐minute delayed. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5412645 Wed, 16 Nov 2011 05:00:00 +0100 5412645 http://www.medworm.com/index.php?rid=5391887&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22879 Conclusion:Myocardial steatosis may represent an early marker of diabetic heart disease, triggering subclinical myocardial dysfunction irrespective of myocardial perfusion reserve. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391887 Tue, 08 Nov 2011 05:00:00 +0100 5391887 http://www.medworm.com/index.php?rid=5391886&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22891 Conclusion:Both phantom experiments and human data showed that the noise pattern may change in different fMRI runs. The variation is mainly caused by the random noise in separate reference scans for GRAPPA in each run. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391886 Tue, 08 Nov 2011 05:00:00 +0100 5391886 http://www.medworm.com/index.php?rid=5391885&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22888 Conclusion:The true diffusion coefficient provides an additional DW‐MRI parameter for distinguishing prostate cancer that is less influenced than the ADC by b‐value selection. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391885 Tue, 08 Nov 2011 05:00:00 +0100 5391885 http://www.medworm.com/index.php?rid=5391884&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22887 Conclusion:The current study demonstrates that acupuncture at different acupoints could exert different modulatory effects on RSNs. Our findings may help to understand the neurophysiological mechanisms underlying acupuncture specificity. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391884 Tue, 08 Nov 2011 05:00:00 +0100 5391884 http://www.medworm.com/index.php?rid=5391883&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22881 Conclusion:Analysis of a combination of CT and MR imaging findings allows for highly accurate differentiation between mass‐forming AIP and pancreatic carcinoma. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391883 Tue, 08 Nov 2011 05:00:00 +0100 5391883 http://www.medworm.com/index.php?rid=5391882&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22878 Conclusion:In some situations, RF exposure limited to SARmax,10g led to a Tmax higher than allowed by International Electrotechnical Commission (IEC) regulations. Therefore, it is advisable to use thermal simulations to evaluate RF safety of MRI. The simulation method used only slightly influenced the observed maximum temperature; the observed temperature with PBHE was higher in all situations. So PBHE is an appropriate method for RF safety assessment of MRI in the head. Using DIVA simulations, it was found unlikely that the body temperature increases significantly due to energy deposited by a head coil under normal circumstances. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391882 Tue, 08 Nov 2011 05:00:00 +0100 5391882 http://www.medworm.com/index.php?rid=5391881&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22877 Conclusion:DWIBS at 3.0 T can be improved by using SSGR and TX. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391881 Tue, 08 Nov 2011 05:00:00 +0100 5391881 http://www.medworm.com/index.php?rid=5391880&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22876 Conclusion:Peritumoral hypointensity on the hepatobiliary phase of EOB‐MRI is not sensitive but has high specificity for predicting microvascular invasion of HCC. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391880 Tue, 08 Nov 2011 05:00:00 +0100 5391880 http://www.medworm.com/index.php?rid=5391879&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22875 Conclusion:The dilatation of cisterna chyli can be demonstrated at MRI in patients with portal hypertension. Additionally, the positive caliber change of cisterna chyli related to contraction waves was observed in subsets of patients during serial T2‐weighted MRI. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391879 Tue, 08 Nov 2011 05:00:00 +0100 5391879 http://www.medworm.com/index.php?rid=5391878&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22871 Conclusion:DW‐MRI is an important method, and the optimal b values are between 600 and 1000 s/mm2 for differentiation between benign and malignant gynecological lesions. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391878 Tue, 08 Nov 2011 05:00:00 +0100 5391878 http://www.medworm.com/index.php?rid=5391877&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22870 Conclusion:Patients with myelofibrosis exhibited increased perfusion parameters in vertebral bone marrow, which could be consisted with increased vascularity, probably related to neoangiogenesis as opposed to ET or PV patients showing no increased perfusion. DCE‐MRI may be of value in discriminating subgroups of PhnegMPN patients and in indicating those progressing to myelofibrosis. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391877 Tue, 08 Nov 2011 05:00:00 +0100 5391877 http://www.medworm.com/index.php?rid=5391876&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22863 Conclusion:The FAST method for quantifying LV twist produces results that are not significantly different from the current “gold standard” in a fraction of the user interaction time and has demonstrated feasibility in human subjects. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391876 Tue, 08 Nov 2011 05:00:00 +0100 5391876 http://www.medworm.com/index.php?rid=5412644&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22885 Conclusion:This novel method generates reliable and consistent physiological parameter maps with significantly lower computation complexity than the multiparameter nonlinear fitting. The DCE‐MRI scan time can be greatly shortened without T1 mapping. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5412644 Tue, 01 Nov 2011 04:00:00 +0100 5412644 http://www.medworm.com/index.php?rid=5391875&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22849 Conclusion:MRI appears as a noninvasive method which can be used to follow disease progression and therapeutic efficacy. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5391875 Tue, 01 Nov 2011 04:00:00 +0100 5391875 http://www.medworm.com/index.php?rid=5368355&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22869 Conclusion:Application of GfM resulted in superior delineation of experimental glioma compared with conventional MRI techniques. Thus, GfM bears a high potential in clinical application. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368355 Tue, 01 Nov 2011 04:00:00 +0100 5368355 http://www.medworm.com/index.php?rid=5368354&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22868 Conclusion:Quantifying refractory effects in individuals was possible in 86.3% of normal subjects using the IL fitting algorithm. This setup may be suitable to explore such effects in individual patients. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368354 Tue, 01 Nov 2011 04:00:00 +0100 5368354 http://www.medworm.com/index.php?rid=5368352&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22866 Conclusion:Feasibility of in vivo aortic MRE is demonstrated. Hypertensives have significantly higher aortic stiffness assessed through MRE than normotensives. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368352 Tue, 01 Nov 2011 04:00:00 +0100 5368352 http://www.medworm.com/index.php?rid=5368351&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22865 Conclusion:Spectral editing methods are now widely used to detect low concentration metabolites, such as GABA, but to date no edited acquisition methods have been proposed for the measurement of transverse relaxation times (T2). The method described has been successfully applied to measuring the T2 of GABA. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368351 Tue, 01 Nov 2011 04:00:00 +0100 5368351 http://www.medworm.com/index.php?rid=5368350&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22864 Conclusion:Quantitative MR imaging can detect and monitor progressive biochemical and biophysical changes in muscle during immobilization. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368350 Tue, 01 Nov 2011 04:00:00 +0100 5368350 http://www.medworm.com/index.php?rid=5368349&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22862 Conclusion:This study demonstrated consistent correlations between the data from 1HMRS and PWI. The Lac/Cr ratio predicts regional hemodynamic changes, which are themselves a useful biomarker of clinical prognosis in patients with LGG. As such, this ratio may provide a new parameter for making improved clinical decisions. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368349 Tue, 01 Nov 2011 04:00:00 +0100 5368349 http://www.medworm.com/index.php?rid=5368348&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22847 Conclusion:The 7T FLASH‐T2* detects more cortical—particularly subpial—lesions compared with 3T DIR. In the absence of DIR/postmortem data, 7T FLASH‐T2* is a suitable gold‐standard instrument and should be incorporated into future consensus guidelines. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368348 Tue, 01 Nov 2011 04:00:00 +0100 5368348 http://www.medworm.com/index.php?rid=5368347&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22837 Conclusion:The findings of this study suggest that quantitative MRI measurements may be suitable in vivo biomarkers of disease status for future studies of NPC disease models. The changes in white matter measurements between timepoints in both control and NPC disease groups suggest that white matter structures continue to change and develop over time in the NPC model and can be tracked with MRI techniques. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368347 Tue, 01 Nov 2011 04:00:00 +0100 5368347 http://www.medworm.com/index.php?rid=5368346&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22819 Conclusion:SID analysis performed on axial maximum intensity projections is easy to implement, fast, and objective and provides more insight in the time course of arteriogenesis than manual identification. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368346 Tue, 01 Nov 2011 04:00:00 +0100 5368346 http://www.medworm.com/index.php?rid=5351068&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22848 Conclusion:The manganese‐based polydisulfide contrast agents have a potential to be developed as alternative non‐gadolinium contrast agents for MR cancer and myocardium imaging. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5351068 Thu, 27 Oct 2011 08:47:37 +0100 5351068 http://www.medworm.com/index.php?rid=5368361&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22854 Conclusion:Abdominal MRI in the evaluation of patients with suspected appendicitis and equivocal clinical findings is safe, reliable, and cost‐effective. It should be considered an important alternative to computed tomography. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368361 Thu, 27 Oct 2011 04:00:00 +0100 5368361 http://www.medworm.com/index.php?rid=5368360&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22850 Conclusion:Increasing the FA in hepatocyte phase MRI with gadoxetate disodium improves hypointense lesion detection and conspicuity, particularly for small lesions. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368360 Thu, 27 Oct 2011 04:00:00 +0100 5368360 http://www.medworm.com/index.php?rid=5368359&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22841 Conclusion:The presence of excreted contrast in the gallbladder lumen can be determined using gadoxetate disodium‐enhanced MRI without precontrast T1‐weighted imaging. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368359 Thu, 27 Oct 2011 04:00:00 +0100 5368359 http://www.medworm.com/index.php?rid=5368358&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22832 Conclusion:MRI and tg‐TVUS show similar results in the identification of recto‐sigmoid endometriosis. The Cohen kappa value suggests that these methods may have complementary roles in the identification of recto‐sigmoid endometriosis, depending on the site affected. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368358 Thu, 27 Oct 2011 04:00:00 +0100 5368358 http://www.medworm.com/index.php?rid=5368357&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22829 Conclusion:3D FSE‐IDEAL is a feasible approach to acquire multiplanar images of diagnostic quality, both with and without homogeneous “fat‐suppression” from a single acquisition. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368357 Thu, 27 Oct 2011 04:00:00 +0100 5368357 http://www.medworm.com/index.php?rid=5368356&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22748 Conclusion:Correlation between BH and FB liver ADC is moderate indicating that BH and FB should not be used interchangeably. Additionally, the lower ADC values in BH versus FB should be accounted for when comparing different liver DWI studies. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5368356 Thu, 27 Oct 2011 04:00:00 +0100 5368356 http://www.medworm.com/index.php?rid=5351072&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22809 Conclusion:This new automated method can reduce analysis time and enhance reproducibility of the quantification of vessel wall dimensions in clinical studies. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5351072 Wed, 26 Oct 2011 04:00:00 +0100 5351072 http://www.medworm.com/index.php?rid=5351071&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22855 Conclusion:In agreement with microscopic examination, noninvasive DCE‐MRI visualized progressive development of new vessels in a novel and standardized murine angiogenesis model, making this model suitable for screening angiogenesis‐related drugs and contrast agents. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5351071 Wed, 26 Oct 2011 04:00:00 +0100 5351071 http://www.medworm.com/index.php?rid=5351070&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22853 Conclusion:Perforator MRA image quality including number of perforators visualized, perforator‐to‐muscle contrast, and vessel sharpness is higher with gadofosveset trisodium compared with gadobenate dimeglumine. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5351070 Wed, 26 Oct 2011 04:00:00 +0100 5351070 http://www.medworm.com/index.php?rid=5351069&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22852 Conclusion:Cirrhotic patients with normal renal function have an increased CMD compared to age‐matched controls. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5351069 Wed, 26 Oct 2011 04:00:00 +0100 5351069 http://www.medworm.com/index.php?rid=5339530&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22858 AbstractLocalized amyloidosis is a rare condition, especially that involving the ureter. Because of its rarity and the difficulty in differentiating this condition from urothelial carcinoma by intravenous urography and computed tomography, nephroureterectomy has often been performed unnecessarily for this disease. The authors encountered two cases of this disease, both of which showed a negative urine cytology, no obvious mass effect, and a hypointensity on T2‐weighted imaging. Because these findings are very rare in urothelial carcinoma, ureteroscopy‐guided biopsy was performed, which yielded the diagnosis of amyloidosis. The patients were then treated and followed up at our institute. Primary localized amyloidosis of the ureter should be considered when evaluating ureteric lesions vi... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5339530 Sun, 23 Oct 2011 09:21:20 +0100 5339530 http://www.medworm.com/index.php?rid=5326543&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22798 (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5326543 Wed, 19 Oct 2011 06:40:03 +0100 5326543 http://www.medworm.com/index.php?rid=5326542&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22778 (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5326542 Wed, 19 Oct 2011 06:39:19 +0100 5326542 http://www.medworm.com/index.php?rid=5326541&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22672 This article reviews the various normal and pathological postoperative MR imaging findings following anterior and posterior cruciate ligament, medial collateral ligament and posterolateral corner reconstruction, meniscus and articular cartilage surgery as well as total knee arthroplasty with emphasis on those surgical procedures which general radiologists will likely be faced in their daily clinical routine. J. Magn. Reson. Imaging 2011;. © 2011 Wiley‐Liss, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5326541 Wed, 19 Oct 2011 06:39:18 +0100 5326541 http://www.medworm.com/index.php?rid=5326540&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22777 AbstractHypertension is a common systemic disorder affecting the cardiovascular system and kidneys with important morbidity and mortality. However, hypertension is often thought of by radiologists as an “invisible” disease. The aim of this article is to first review hypertension first in terms of its diagnosis, epidemiology and clinical importance. Second, those causes of secondary hypertension that may be diagnosed with MRI techniques are described along with the effects of hypertension on the cardiovascular system and kidneys that are demonstrable with MRI with particular emphasis on renovascular disease. Lastly the use of integrated MRI protocols to evaluate the hypertensive patient and areas for future research are considered. J. Magn. Reson. Imaging 2011. © 2011 Wiley Periodicals... Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5326540 Wed, 19 Oct 2011 06:39:16 +0100 5326540 http://www.medworm.com/index.php?rid=5317888&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22845 Conclusion:The shear modulus measured by UTE and MRE are not equivalent, especially in patients with stiff livers. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5317888 Fri, 14 Oct 2011 04:00:00 +0100 5317888 http://www.medworm.com/index.php?rid=5317887&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22843 Conclusion:Anatomical imaging should be based on T1‐weighted sequences (FLASH, MPRAGE, MDEFT) with an SAR below values for functional MRI sequences based on gradient echo planar imaging. Anatomical sequences with a high SAR can pose a significant risk, which is reduced by using head coil transmission. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5317887 Fri, 14 Oct 2011 04:00:00 +0100 5317887 http://www.medworm.com/index.php?rid=5317886&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22801 Conclusion:A 3T DSC and multi‐voxel MRS Cho/Cr peak‐area and Cho/NAA peak‐height appear to outperform DWI for distinguishing glioma recurrence from posttreatment effects. Single‐voxel MRS parameters do not appear to distinguish glioma recurrence from posttreatment effects reliably, and therefore should not be used in place of multi‐voxel MRS. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5317886 Fri, 14 Oct 2011 04:00:00 +0100 5317886 http://www.medworm.com/index.php?rid=5317885&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22728 Conclusion:Chemical shift MRI at 3.0T provides more accurate differentiation between adenomas and non‐adenomas than at 1.5T. The SI index of the first‐echo‐pair at 3.0T is the most reliable evaluation method for differentiating adrenal adenomas from non‐adenomas. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5317885 Fri, 14 Oct 2011 04:00:00 +0100 5317885 http://www.medworm.com/index.php?rid=5317884&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22686 Conclusion:MRI can detect early regional LV dysfunction in patients with preserved LVEF after repair of tetralogy of Fallot. MR may be a useful technique for guiding clinical decisions in these patients in order to prevent future global LV deterioration. J. Magn. Reson. Imaging 2011;. © 2011 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5317884 Fri, 14 Oct 2011 04:00:00 +0100 5317884 http://www.medworm.com/index.php?rid=5307143&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22811 Conclusion:The present study demonstrated that T1ρ and T2 values reflect the GAG content of the cartilage and can indicate cartilage degeneration in vivo. Use of these parameters can facilitate the noninvasive diagnosis and evaluation of cartilage degeneration. J. Magn. Reson. Imaging 2011;. © 2011 Wiley‐Liss, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5307143 Tue, 11 Oct 2011 04:00:00 +0100 5307143 http://www.medworm.com/index.php?rid=5307142&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22807 Conclusion:Inverse relationships between degrees of fibrosis and both ADC and T2 are seen, highlighting the utility of these parameters in the ongoing development of an MRI methodology to quantify hepatic fibrosis. J. Magn. Reson. Imaging 2011;. © 2011 Wiley‐Liss, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5307142 Tue, 11 Oct 2011 04:00:00 +0100 5307142 http://www.medworm.com/index.php?rid=5307141&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22749 Conclusion:DWI on 3T MR imaging may be a promising technique for helping to predict and monitor the treatment response to neoadjuvant CRT in patients with locally advanced rectal cancer. J. Magn. Reson. Imaging 2011;. © 2011 Wiley‐Liss, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5307141 Tue, 11 Oct 2011 04:00:00 +0100 5307141 http://www.medworm.com/index.php?rid=5307139&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22722 AbstractConventional, anatomical MRI is an essential tool for diagnosis and evaluation of location, quality, and extent of posterior fossa tumors, but offers limited information regarding tumor grade and type. Advanced MRI techniques such as diffusion weighted imaging (DWI) and diffusion tensor imaging (DTI) may improve the specific diagnosis of brain tumors in the posterior fossa in children. In this review the conventional neuroimaging findings, as well as the DWI, and DTI characteristics of common pediatric posterior fossa tumors are discussed and summarized. J. Magn. Reson. Imaging 2011;. © 2011 Wiley‐Liss, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5307139 Tue, 11 Oct 2011 04:00:00 +0100 5307139 http://www.medworm.com/index.php?rid=5307138&cid=s_33650_37_f&fid=33650&url=http%3A%2F%2Fdx.doi.org%2F10.1002%252Fjmri.22652 Conclusion:MRI coronary artery wall imaging can identify coronary plaque in the proximal segments. It also has the potential to assess coronary artery size. J. Magn. Reson. Imaging 2011;. © 2011 Wiley‐Liss, Inc. (Source: Journal of Magnetic Resonance Imaging) Journal of Magnetic Resonance Imaging journals http://www.medworm.com/rss/comments.php?id=5307138 Tue, 11 Oct 2011 04:00:00 +0100 5307138