MedWorm: Radiology

Editorial board

Medical Image Analysis — Sat, 25 May 2013 05:19:57 +0100

(Source: Medical Image Analysis)

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Evaluation of a Kalman-based block matching method to assess the bi-dimensional motion of the carotid artery wall in B-mode ultrasound sequences

Medical Image Analysis — Sat, 25 May 2013 05:19:57 +0100

Graphical abstract: Highlights: Abstract: We aim at investigating arterial diseases at early stage, by assessing the longitudinal (i.e. in the same direction as the blood flow) motion of the intima-media complex. This recently evidenced phenomenon has been shown to provide relevant and complementary information about vascular health.Our method assesses the longitudinal and radial motion from clinical in vivo B-mode ultrasound sequences. To estimate the trajectory of a selected point during the cardiac cycle, we introduce a block matching method that involves a temporal update of the reference block using a pixel-wise Kalman filter. The filter uses the initial gray-level of the pixel as control signal to avoid divergence due to cumulating errors. The block and search-window sizes are adapte...

Meetings

International Journal of Radiation Oncology * Biology * Physics — Sat, 25 May 2013 05:19:51 +0100

September 1-5, 2013 40th Annual Meeting of the European Radiation Research Society (Source: International Journal of Radiation Oncology * Biology * Physics)

Issue Highlights

International Journal of Radiation Oncology * Biology * Physics — Sat, 25 May 2013 05:19:50 +0100

Klein et al In this edition of the Oncology Scan, Senior Editor Eric Klein and three of his Associate Editors (Indra Das, Lei Dong, and Mark Rivard) have combined to bring four important studies from the broader literature that will be of interest to Red Journal readers. The first study looks at improving the performance of deformable image registration in a way that compensates for missing tissue. The second paper looks at a crucial issue in proton beam therapy—range uncertainty. The third article examines TG 186 and model-based dose calculation methods, which attempt to close the gap between prescribed and absorbed dose in brachytherapy. The final paper is a report of a prototype system that may integrate radiation therapy treatment delivery with real-time MR imaging, exploiting i...

Oncology Scan—Improvements in Dose Calculation, Deformable Registration, and MR-Guided Radiation Delivery

International Journal of Radiation Oncology * Biology * Physics — Sat, 25 May 2013 05:19:50 +0100

The Physics Editorial Team for the International Journal of Radiation Oncology Biology Physics (IJROBP) includes 7 associate editors and 1 senior editor. It comprises physicists having diverse expertise from North America and Europe, and from small and large academic centers . The Physics Team by far receives the most manuscripts among the 9 broad editorial categories within IJROBP, which includes 7 clinical sites, biology, and physics. This, unfortunately, leads to a high rate of manuscripts that must be declined or rejected. (Source: International Journal of Radiation Oncology * Biology * Physics)

In Regard to Chakravarti et al

International Journal of Radiation Oncology * Biology * Physics — Sat, 25 May 2013 05:19:50 +0100

To the Editor: We read with interest the formal publication from Radiation Therapy Oncology Group (RTOG) protocol 0211; although epidermal growth factor receptor (EGFR) tyrosine-kinase-inhibition via gefitinib did not improve outcomes relative to historical standards, the study adds to a growing body of data incorporating novel systemic agents in glioblastoma (GBM) . As trials such as RTOG 0211 continue to challenge conventional paradigms in multimodality management for GBM, reducing radiation therapy late effects becomes of increasing significance. Although radiation-induced side effects are presumably a function of the treated volume of normal brain parenchyma, no consensus regarding target volume definition for radiation therapy in GBM exists . (Source: International Journal of Radiatio...

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In Regard to Pinn-Bingham et al

International Journal of Radiation Oncology * Biology * Physics — Sat, 25 May 2013 05:19:50 +0100

To the Editor: We read with great interest the article by Pinn-Bingham et al on high-dose-rate interstitial brachytherapy in locally advanced cervical cancer. This is the largest study published to date in this regard after the study by Demanes et al and will definitely be of interest to the majority of practicing gynecologic oncologists worldwide. However, some points need to be argued in this study. (Source: International Journal of Radiation Oncology * Biology * Physics)

In Reply to Gandhi et al

International Journal of Radiation Oncology * Biology * Physics — Sat, 25 May 2013 05:19:50 +0100

To the Editor: We appreciate the interest shown by Dr Gandhi and associates in our article published in the March 1st issue of this journal . They have raised three questions regarding our study and our experience, which we would like to explain as follows: (Source: International Journal of Radiation Oncology * Biology * Physics)

In Regard to Reuther et al

International Journal of Radiation Oncology * Biology * Physics — Sat, 25 May 2013 05:19:50 +0100

To the Editor: The recent article by Reuther et al provided for highly interesting and stimulating reading. C-509T polymorphism may modulate the risk of progression and evolution of a number of systemic malignancies. A significant association is seen in pulmonary malignancies. This effect is especially more significant in individuals with a history of (Source: International Journal of Radiation Oncology * Biology * Physics)

In Reply to Kapoor

International Journal of Radiation Oncology * Biology * Physics — Sat, 25 May 2013 05:19:50 +0100

To the Editor: Dr Kapoor's letter regarding our paper emphasizes that the single-nucleotide polymorphism (SNP) C-509T in TGFB1 might be of great significance in oncology. There is no doubt that TGFB1 is involved in many processes, such as cell proliferation, transformation, cellular radiosensitivity, and fibrosis, all of which are of central relevance, especially in radiooncology. As a consequence, there is a great interest to know how far these processes are modulated by specific SNPs. This information may then be used to establish a SNP profile indicating an exceptional risk. (Source: International Journal of Radiation Oncology * Biology * Physics)

National Residency Matching Program Results for Radiation Oncology: 2012 Update

International Journal of Radiation Oncology * Biology * Physics — Sat, 25 May 2013 05:19:50 +0100

Radiation oncology remains one of the most competitive specialties to obtain a residency training position. Over the past decade, National Residency Matching Program (NRMP) data have shown sizeable increases in the number of applicants relative to commensurate increases in the number of positions . Recent evidence suggests that a 2-fold increase in the residency workforce is needed within 5 years to compensate for increases in demand for radiation therapy services . Complicating the supply gap, recent changes in healthcare reform are projected to increase the number of insured patients by almost 32 million . Surveillance of the residency workforce data from the NRMP is useful to project future adequacy of the workforce and the continued recruitment of the best applicants. (Source: Internat...

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Preclinical Evaluation of Genexol-PM, a Nanoparticle Formulation of Paclitaxel, as a Novel Radiosensitizer for the Treatment of Non-Small Cell Lung Cancer

International Journal of Radiation Oncology * Biology * Physics — Sat, 25 May 2013 05:19:50 +0100

Conclusions: We have demonstrated that Genexol-PM is more effective than Taxol as a radiosensitizer in the preclinical setting and holds high potential for clinical translation. Our data support the clinical evaluation of Genexol-PM in chemoradiation therapy for NSCLC. (Source: International Journal of Radiation Oncology * Biology * Physics)

Impact of Boost Radiation in the Treatment of Ductal Carcinoma In Situ: A Population-Based Analysis

International Journal of Radiation Oncology * Biology * Physics — Sat, 25 May 2013 05:19:50 +0100

Conclusions: Among a population of women treated with breast-conserving surgery and radiation for DCIS, additional (boost) radiation was not associated with a lower risk of local or invasive recurrence. (Source: International Journal of Radiation Oncology * Biology * Physics)

Drug-eluting Stent Patency at 6 Months in the Pedal Artery of a Patient with Polyarteritis Nodosa: A Case Report

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:49 +0100

Abstract: Drug-eluting stents are largely used in coronary arteries and more recently in tibial arteries owing to their potentially better outcomes compared with bare metal stents. A patient with polyarteritis nodosa and critical limb ischemia and a dorsal foot ulcer was previously unsuccessfully treated with multiple angioplasties and subsequently underwent implantation of a drug-eluting stent in the pedal artery. At 6 months, stent patency on color Doppler ultrasound and complete healing of the foot ulcer were observed. (Source: Journal of Vascular and Interventional Radiology : JVIR)

Percutaneous Internal Thoracic Artery Approach in the Treatment of Type II Endoleak

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:49 +0100

We present a case report of a man with a ruptured aortosubclavian aneurysm combined with aortic arch pseudocoarctation treated in a two-stage procedure with extraanatomic bypasses and stent-graft implantation. After combined treatment with surgical ligation of the subclavian artery just distal to the origin of the left vertebral artery, a type II endoleak developed, originating from the retrograde left vertebral artery to the aortosubclavian aneurysm. The endoleak was successfully treated by endovascular means with a unique percutaneous approach via the internal thoracic artery with a combination of coils and Onyx liquid embolic agent (ev3, Irvine, California). (Source: Journal of Vascular and Interventional Radiology : JVIR)

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Hepatojejunostomy Obstruction Caused by Recurrent Malignant Tumor: Percutaneous Transhepatic Metallic Stent Placement with “U-Turn” Technique

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:49 +0100

Hepatojejunostomy obstruction at the hepatic hilum caused by a recurrent malignant tumor causes dilation of the proximal afferent loop and jaundice. Percutaneous drainage through a transhepatic biliary drainage route is effective (). However, the presence of the percutaneous transhepatic biliary drainage (PTBD) catheter reduces quality of life, and life-threatening sepsis caused by reflux of bowel contents into the bile duct through the PTBD catheter has been reported (). Percutaneous tube enterostomy is also effective for afferent loop syndrome (); however, it may be impossible to puncture the dilated afferent loop when it is deeply located. (Source: Journal of Vascular and Interventional Radiology : JVIR)

Fibromuscular Dysplasia–related Aneurysms: One-year Follow-up after Treatment with a Flow-diverting Stent

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:49 +0100

Fibromuscular dysplasia (FMD) is an idiopathic, segmental, nonatheromatous disease of the muscular layer of arterial walls that leads to stenoses and aneurysms in small and medium-sized arteries. The prevalence of symptomatic FMD is estimated at approximately 4/1,000 in the general population (). The disease often becomes symptomatic as a result of renovascular hypertension. (Source: Journal of Vascular and Interventional Radiology : JVIR)

Re: Transcatheter Arterial Embolization of Acute Arterial Bleeding in the Upper and Lower Gastrointestinal Tract with N-Butyl-2-Cyanoacrylate

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:49 +0100

We read with great interest the article by Yata et al () reporting the effectiveness of transcatheter arterial embolization with n-butyl-2-cyanoacrylate (NBCA) in patients with acute arterial bleeding from the upper or lower gastrointestinal tract. We have several comments. First, we would like to congratulate the authors for their study (), which represents one of the most important series to date reporting results of transcatheter arterial embolization with NBCA glue as an embolic agent in such a setting. (Source: Journal of Vascular and Interventional Radiology : JVIR)

Reply to “Transcatheter Arterial Embolization of Acute Arterial Bleeding in the Upper and Lower Gastrointestinal Tract with N-Butyl-2-Cyanoacrylate”

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:49 +0100

As described in our study (), immediately after cast formation in the target vessel or fluoroscopic visualization of pseudoaneurysm during injection of n-butyl-2-cyanoacrylate (NBCA) mixture, the microcatheter was removed quickly to prevent adherence of the catheter tip to the vessel wall and discarded without flushing. Regarding the polymerization time of the mixture of NBCA and iodized oil, Stoesslein et al () reported that a mixing ratio of 1:3–1:4 provided optimal embolic material with a polymerization time of 7.5–11.5seconds, with excellent contrast definition in their experimental study. However, the in vivo polymerization time for NBCA appears to be more rapid than the in vitro time because of the higher body temperature compared with room temperature and a greater presence of a...

Editorial Board

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:49 +0100

(Source: Journal of Vascular and Interventional Radiology : JVIR)

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Subscription Information Page

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:49 +0100

(Source: Journal of Vascular and Interventional Radiology : JVIR)

Contents in Brief

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:49 +0100

(Source: Journal of Vascular and Interventional Radiology : JVIR)

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:49 +0100

(Source: Journal of Vascular and Interventional Radiology : JVIR)

Forthcoming Articles: July 2013

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:49 +0100

(Source: Journal of Vascular and Interventional Radiology : JVIR)

Musculoskeletal Intervention: Thinking Outside the Box

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

In its early years, interventional radiology was considered principally the domain of vascular radiologists. As the subspecialty evolved, biliary and gastrointestinal intervention, as well as general genitourinary intervention, formed an increasingly large part of interventional practices. During the past dozen years, musculoskeletal procedures have also come to have a higher profile, particularly with the advent of cement injection procedures and ablation technologies. Angiographic procedures dealing with the musculoskeletal system have principally been restricted to embolization procedures following trauma or in the treatment of tumors for preoperative devascularization or for treatment of vascular malformations. (Source: Journal of Vascular and Interventional Radiology : JVIR)

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Medical Device Excise Tax: Implications for Interventional Radiologists

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

The Affordable Care Act of 2010 represents the most sweeping health care reform in the past 50 years, extending health insurance coverage to 33 million uninsured Americans. The final bill included numerous changes in the tax code to help fund its central tenets, including one of the largest ever expansions of Medicaid and federal health insurance subsidies for low-income families. One such change is the Medical Device Excise Tax, a new 2.3% tax levied on the sale price of any medical device as defined by the Food and Drug Administration, which went into effect January 1, 2013 (). Products subject to the tax include surgical drapes, catheters, wires, stents, and advanced imaging equipment, all of which interventional radiologists routinely use to do their work. Although the Medical Device E...

CME Test Questions: June 2013

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

(Source: Journal of Vascular and Interventional Radiology : JVIR)

How Cool Is Percutaneous Cryoablation?

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

Cryoablation has been performed surgically since the early 1960s and, more recently, percutaneously for liver, breast, prostate, renal, musculoskeletal, and pancreatic tumors . The key to cryoablation is in producing temperatures low enough to cause necrosis in the target tissue, while avoiding lethal conditions in healthy peripheral tissue. It works by two main mechanisms: (i) at the cellular level, via solute damage and intracellular ice formation, and (ii) at the vascular level, resulting in thrombosis and subsequent coagulative and ischemic necrosis. (Source: Journal of Vascular and Interventional Radiology : JVIR)

Percutaneous Cryoablation of Symptomatic Localized Venous Malformations: Preliminary Short-term Results

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

Abstract: Short-term outcomes after percutaneous image-guided cryoablation of symptomatic venous malformations in four consecutive patients (mean age, 42.5 y) are reported. Two patients had local recurrences after previous treatment. Mean preoperative pain was estimated on a visual analog scale at 5 (range, 3–7). Cryoablation was performed in a single session under general anesthesia. Postoperative pain and superficial edema disappeared within 2 weeks. No pain was subsequently reported, and magnetic resonance imaging demonstrated a significant volume decrease at 3 months (75%; P = .01) and at 6 months (95%; P = .01). Percutaneous cryoablation shows promising local control in patients with symptomatic venous malformations. (Source: Journal of Vascular and Interventional Radiology : JVIR)

Chronic Cerebrospinal Venous Insufficiency and Cerebrospinal Fluid: Another Piece of the Puzzle?

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

Chronic cerebrospinal venous insufficiency (CCSVI) is a theory that has attempted to link venous outflow obstruction from the central nervous system (CNS) with neurologic abnormalities such as multiple sclerosis (MS). In some ways, it has been unfortunate that CCSVI was initially described in the context of a disease such as MS. Enthusiastic and optimistic patients and physicians embraced the early findings of Zamboni et al () as an “explanation” and “cure” for this debilitating condition. Venous disease was identified on venography and treated with angioplasty, leading to patient-reported symptomatic improvement. Understandably, this type of fundamental paradigm shift regarding an important disease such as MS was unsettling to many, and some neurologists countered these claims wit...

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The Use of Endovenous Laser Treatment in Toddlers

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

Abstract: The use of endovenous laser ablation therapy in children is limited. Klippel-Trenaunay syndrome (KTS) is associated with persistent ectatic anomalous veins within the affected extremity, with increased risk of thromboembolism. The present report describes four toddlers ( (Source: Journal of Vascular and Interventional Radiology : JVIR)

Midterm Outcomes of Stent Placement for Long-segment Iliac Artery Chronic Total Occlusions: A Retrospective Evaluation in a Single Institution

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

Conclusions: These data suggest that stent placement is an effective, safe, and feasible method for treating long-segment iliac artery CTOs. (Source: Journal of Vascular and Interventional Radiology : JVIR)

Prognostic Utility of Serum Neopterin in Obstructive Jaundice Secondary to Malignant Lesions Treated by Percutaneous Transhepatic Biliary Drainage

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

Conclusions: Neopterin levels increased after PTBD, indicating cellular immune activation. The nonsignificant change in cytokine levels may be related to low enduring release in malignancy. The extremely elevated levels of neopterin and creatinine after PTBD might serve as harbingers of early death in patients with cholestasis secondary to malignant lesions. (Source: Journal of Vascular and Interventional Radiology : JVIR)

Measuring (and Manipulating) Cellular Immune Activation

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

The immune system serves to protect us from both infectious agents and malignancy. Normal homeostasis requires a constant iterative process of recognition of threats, recruitment and deployment of appropriate defenders, and vigilance against reprisal attacks. Activation of the immune system when we are under attack may manifest as fever; leukocytosis; and elevated circulating cytokines, antibodies, and complement. Although these manifestations are associated with discomfort, they represent a reassuring counteroffensive. (Source: Journal of Vascular and Interventional Radiology : JVIR)

Management of Lymphoceles after Renal Transplant: Case Report of a Novel Percutaneous Image-guided Treatment Technique

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

abstract: A 65-year-old African American man with end-stage renal disease underwent renal transplantation and developed a perigraft lymphocele with an associated progressive increase in serum creatinine 6 weeks after surgery, which failed to resolve with percutaneous drainage and surgical therapy. Fluoroscopic and ultrasound-guided percutaneous transperitoneal balloon fenestration with a 22-mm, 2-cm-long balloon catheter resulted in resolution of the lymphocele as shown by ultrasound at 3 and 5 months. (Source: Journal of Vascular and Interventional Radiology : JVIR)

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Magnetic Catheter Manipulation in the Interventional MR Imaging Environment

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

Conclusions: Controlled catheter deflection is possible with laser lithographed multiaxis coil-tipped catheters in the MR imaging environment. (Source: Journal of Vascular and Interventional Radiology : JVIR)

Magnetic Resonance Imaging–guided Endovascular Interventions—Are We There Yet?

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:48 +0100

“I confess that in 1901, I said to my brother Orville that man would not fly for 50 years…. Ever since, I have distrusted myself and avoided all predictions.”—Wilbur Wright The only robust real-time, one-stop, imaging modality available today for vascular access, endovascular navigation, guidance, definition of lesion morphology, and on-table assessment of endovascular therapy is x-ray angiography. The evaluation of the results of such therapy consists primarily of noting a morphologic change in the lesion or a delayed clinical assessment, rather than an immediate on-table evaluation of anatomic and functional or physiologic endpoints . This need for better immediate assessment of therapy, combined with increasing concern about exposure to ionizing radiation, has motivated the que...

Comparison of the Efficacy of Dexmedetomidine plus Fentanyl Patient-controlled Analgesia with Fentanyl Patient-controlled Analgesia for Pain Control in Uterine Artery Embolization for Symptomatic Fibroid Tumors or Adenomyosis: A Prospective, Randomized Study

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:47 +0100

Abstract: Purpose: To investigate whether dexmedetomidine infusion could reduce opioid consumption and opioid-related side effects after uterine artery embolization (UAE).Materials and Methods: Fifty patients undergoing UAE for symptomatic leiomyomas or adenomyosis were randomized into two groups. In 25 patients, dexmedetomidine infusion was started at 0.2 μg/kg/h at 30 minutes before the procedure, followed by 0.4 μg/kg/h for 6 hours after the procedure. In another 25 patients (control group), volume-matched normal saline solution was administered. Both groups received fentanyl-based intravenous patient-controlled analgesia (PCA; fentanyl 10 μg/h with a bolus dose of 20 μg) during the 24 hours after the procedure. Nonspherical polyvinyl alcohol particles were used. Pain scores, fentan...

Transcatheter Arterial Embolization Using Imipenem/Cilastatin Sodium for Tendinopathy and Enthesopathy Refractory to Nonsurgical Management

Journal of Vascular and Interventional Radiology : JVIR — Sat, 25 May 2013 05:19:47 +0100

Conclusions: Transcatheter arterial embolization with imipenem/CS was feasible and effectively relieved unrelenting pain associated with tendinopathy and enthesopathy. (Source: Journal of Vascular and Interventional Radiology : JVIR)

Higher dose dobutamine stress MR imaging in repaired tetralogy of fallot: Observer variance of volumetric assessment compared with normal volunteers

Journal of Magnetic Resonance Imaging — Sat, 25 May 2013 05:18:33 +0100

ConclusionVolumetric assessment during DS‐MR shows excellent inter‐observer agreement, except for LV‐ESV in the TOF patients at higher doses of dobutamine. The axial geometry appears to be reproducible for assessment of RV parameters, and could be considered superior to short axis imaging in patients with repaired TOF. J. Magn. Reson. Imaging 2013;. © 2013 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging)

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Hemodynamic assessment of indomethacin‐induced fetal heart failure in high‐output state

Journal of Clinical Ultrasound — Sat, 25 May 2013 05:18:14 +0100

This study suggests that indomepacin treatment in fetal high‐cardiac output state should be used with extreme caution. © 2013 Wiley Periodicals, Inc. J Clin Ultrasound, 2013; (Source: Journal of Clinical Ultrasound)

Application of Advanced Synchrotron RadiationBased and Conventional Molecular Techniques in Recent Research on Molecular Structure, Metabolic Characteristics, and Nutrition in Coproducts from Biofuel Processing

Applied Spectroscopy Reviews — Sat, 25 May 2013 05:15:02 +0100

(Source: Applied Spectroscopy Reviews)

NIR Spectroscopy and Imaging Techniques for Evaluation of Fish Quality-A Review

Applied Spectroscopy Reviews — Sat, 25 May 2013 05:15:02 +0100

(Source: Applied Spectroscopy Reviews)

Exploration of Displacement Reaction/Sorption Strategies in Spectrometric Analysis

Applied Spectroscopy Reviews — Sat, 25 May 2013 05:15:02 +0100

(Source: Applied Spectroscopy Reviews)

Recent Applications of Evolved Gas Analysis by Infrared Spectroscopy (IR-EGA)

Applied Spectroscopy Reviews — Sat, 25 May 2013 05:15:02 +0100

(Source: Applied Spectroscopy Reviews)

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Lateral radiographic technique: an alternative approach for anterior teeth.

J Contemp Dent Pract — Sat, 25 May 2013 02:10:03 +0100

Conclusion: LRT is an easy and cheap technique that can be used to help in anterior teeth diagnosis. Clinical significance: Considering that LRT is easy to perform and available at low cost, it could be utilized more by clinicians in the dental office in order to quickly assist in diagnosis. As a complimentary radiographic examination for anterior teeth, it could become a useful supplement to aid the clinical practice. Keywords: Endodontics, Radiology, Diagnostic radiology. How to cite this article: Andrade CV Jr, Leal Silva EJN, Da Silva JM, Ferraz CCR. Lateral Radiographic Technique: An Alternative Approach for Anterior Teeth. J Contemp Dent Pract 2013;14(1):43-46. Source of support: Nil Conflict of interest: None declared. PMID: 23579891 [PubMed - in process] (Source: J Contemp Dent...

Amirsys updates RadPrimer to version 3.0

AuntMinnie.com Headlines — Fri, 24 May 2013 20:38:42 +0100

Medical education firm Amirsys has announced the July launch of RadPrimer 3.0, (more) (Source: AuntMinnie.com Headlines)

ASRT awards $250K in scholarships

AuntMinnie.com Headlines — Fri, 24 May 2013 20:34:11 +0100

The American Society of Radiologic Technologists (ASRT) Foundation said it (more) (Source: AuntMinnie.com Headlines)

MRI helps predict vascular disease in brain

AuntMinnie.com Headlines — Fri, 24 May 2013 17:45:08 +0100

Researchers have found that aortic arch pulse-wave velocity as measured by (more) (Source: AuntMinnie.com Headlines)

Covidien board approves Mallinckrodt spin-off

AuntMinnie.com Headlines — Fri, 24 May 2013 17:11:16 +0100

The board of directors of Covidien has approved the company's spin-off of its (more) (Source: AuntMinnie.com Headlines)

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CAD for breast MRI improves sensitivity; accuracy not so much

AuntMinnie.com Headlines — Fri, 24 May 2013 15:32:58 +0100

Computer-aided detection (CAD) technology improves sensitivity in breast MRI (more) (Source: AuntMinnie.com Headlines)

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International Journal of Pediatric Otorhinolaryngology — Fri, 24 May 2013 08:18:04 +0100

The editors state that the goal of this new textbook is to give readers an active means of acquiring and retaining knowledge relevant to otolaryngology – head and neck surgery. While the intended audience is for otolaryngologists preparing for board or re-certification examinations, it can also be used by practicing physicians as a lifelong learning tool. In contrast to various other board preparation textbooks or workbooks that teach relevant information by question and answer format or in prose, this book attempts to address different people's learning styles. This is accomplished by dividing the book into five sections: case presentations, focus questions, radiology, histopathology, and multiple choice questions. (Source: International Journal of Pediatric Otorhinolaryngology)

Decision-support tool slashes inappropriate heart imaging

AuntMinnie.com Headlines — Fri, 24 May 2013 07:00:00 +0100

The use of physician decision-support software based on appropriateness criteria (more) (Source: AuntMinnie.com Headlines)

Zonare increases global shipments of ZS3

AuntMinnie.com Headlines — Fri, 24 May 2013 07:00:00 +0100

Ultrasound technology developer Zonare Medical Systems recently expanded commercial (more) (Source: AuntMinnie.com Headlines)

Visage debuts Ease for mobile use

AuntMinnie.com Headlines — Fri, 24 May 2013 07:00:00 +0100

Advanced visualization and PACS firm Visage Imaging has released Visage Ease (more) (Source: AuntMinnie.com Headlines)

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ACR elects Blumberg as new president

AuntMinnie.com Headlines — Fri, 24 May 2013 07:00:00 +0100

The American College of Radiology (ACR) Council has elected Dr. Albert Blumberg (more) (Source: AuntMinnie.com Headlines)

Assessment of Medicare's Imaging Efficiency Measure for Emergency Department Patients With Atraumatic Headache

Annals of Emergency Medicine — Fri, 24 May 2013 06:15:29 +0100

The Centers for Medicare & Medicaid Services (CMS) adopted 7 imaging efficiency measures for the Hospital Outpatient Quality Reporting Program. Currently, CMS reports 4 measures on Hospital Compare and will expand to 6 measures in July 2012. We developed these measures with a transparent and rigorous development and testing process. The Technical Expert Panel convened for these measures included emergency physicians, radiologists, and other physicians. We also sought the opinions of hospital stakeholders, specialty societies, and patient advocates during 2 public comment periods and a listening session. (Source: Annals of Emergency Medicine)

A UK retrospective observational study of clinical outcomes and healthcare resource utilisation of infliximab treatment in Crohn's disease

Alimentary Pharmacology and Therapeutics — Fri, 24 May 2013 05:15:17 +0100

ConclusionsThe observed reductions in numbers of hospitalisations, surgical procedures and consultations with healthcare professionals are key indicators of the clinical effectiveness of infliximab for the treatment of CD. These benefits result in overall decreases in healthcare resource utilisation, which translate into cost savings for the NHS. (Source: Alimentary Pharmacology and Therapeutics)

Orthostatic stress echocardiography as a useful test to measure variability of transvalvular pressure gradients in aortic stenosis

Cardiovascular Ultrasound — Fri, 24 May 2013 04:00:00 +0100

Conclusions: The orthostatic position test frequently generated a decrease of "theoretically fixed at rest" valvular gradient in AS. The combination of the stiffened stenotic valve apparatus and a reduced LV preload may be responsible for this decreasing response. (Source: Cardiovascular Ultrasound)

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The relationship of flow velocities to vessel diameters differs between extracranial carotid and vertebral arteries of stroke patients

Journal of Clinical Ultrasound — Fri, 24 May 2013 04:00:00 +0100

ConclusionsOur study demonstrated different diameter/flow relationships in the carotid and the vertebral arteries of stroke patients, which may suggest pathologic changes in the adaptive processes governing vessel diameter and growth, especially in the carotid arteries. © 2013 Wiley Periodicals, Inc. J Clin Ultrasound, 2013; (Source: Journal of Clinical Ultrasound)

Pleural effusion leading to right atrial collapse

Journal of Clinical Ultrasound — Fri, 24 May 2013 04:00:00 +0100

ABSTRACT Rapid accumulation of pericardial fluid can lead to tamponade, resulting in cardiac chambers' collapse, which can lead to hemodynamic and clinical instability, potentially needing emergent pericardiocentesis. Pleural effusion should also be considered as a potential, if rare, cause of cardiac chambers' collapse and possibly cardiac tamponade. This phenomenon has clinical implications because hemodynamically unstable patients with moderate to large pleural effusion may actually need thoracentesis instead of massive volume resuscitation, inotropic agents, or pericardiocentesis. © 2013 Wiley Periodicals, Inc. J Clin Ultrasound, 2013; (Source: Journal of Clinical Ultrasound)

Correction of eddy current distortions in high angular resolution diffusion imaging

Journal of Magnetic Resonance Imaging — Fri, 24 May 2013 04:00:00 +0100

Conclusion:The method can correct eddy current artifacts in the high angular resolution diffusion images, and it avoids the problematic procedure of cross‐correlating images with significantly different contrasts resulting from very different gradient orientations or strengths. J. Magn. Reson. Imaging 2013;37:1460–1467. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging)

Masthead, Volume 37, Issue 6

Journal of Magnetic Resonance Imaging — Fri, 24 May 2013 04:00:00 +0100

(Source: Journal of Magnetic Resonance Imaging)

JMRI reflects on past resonances and welcomes third Editor‐in‐Chief

Journal of Magnetic Resonance Imaging — Fri, 24 May 2013 04:00:00 +0100

(Source: Journal of Magnetic Resonance Imaging)

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Liver lesion detection and characterization: Role of diffusion‐weighted imaging

Journal of Magnetic Resonance Imaging — Fri, 24 May 2013 04:00:00 +0100

Abstract Diffusion‐weighted imaging (DWI) plays an emerging role for the assessment of focal and diffuse liver diseases. This growing interest is due to that fact that DWI is a noncontrast technique with inherent high contrast resolution, with promising results for detection and characterization of focal liver lesions. Recent advances in diffusion image quality have also added interest to this technique in the abdomen. The purpose of this review is to describe the current clinical roles of DWI for the detection and characterization of focal liver lesions, and to review pitfalls, limitations, and future directions of DWI for assessment of focal liver disease. J. Magn. Reson. Imaging 2013;37:1260–1276. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging)

Evolving role of MRI in Crohn's disease

Journal of Magnetic Resonance Imaging — Fri, 24 May 2013 04:00:00 +0100

Abstract MR enterography is playing an evolving role in the evaluation of small bowel Crohn's disease (CD). Standard MR enterography includes a combination of rapidly acquired T2 sequence, balanced steady‐state acquisition, and contrast enhanced T1‐weighted gradient echo sequence. The diagnostic performance of these sequences has been shown to be comparable, and in some respects superior, to other small bowel imaging modalities. The findings of CD on MR enterography have been well described in the literature. New and emerging techniques such as diffusion‐weighted imaging (DWI), dynamic contrast enhanced MRI (DCE‐MRI), cinematography, and magnetization transfer, may lead to improved accuracy in characterizing the disease. These advanced techniques can provide quantitative parameters...

Technical considerations in MR angiography: An image‐based guide

Journal of Magnetic Resonance Imaging — Fri, 24 May 2013 04:00:00 +0100

This article adopts such an approach. Simple ways to improve MRA image quality are emphasized along with new technologies and their physical basis. The ultimate goal of the article is to facilitate the practicing radiologist becoming more aware of the variety of MR techniques available, being more confident in modifying sequence parameters to improve image quality and reduce contrast dose, and understanding the basis behind newer MRA techniques. J. Magn. Reson. Imaging 2013;37:1326–1341. © 2013 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging)

Effectiveness of micron‐sized superparamagnetic iron oxide particles as markers for detection of migration of bone marrow‐derived mesenchymal stromal cells in a stroke model

Journal of Magnetic Resonance Imaging — Fri, 24 May 2013 04:00:00 +0100

Conclusion:This study suggests that the use of MPIOs as labeling agents are insufficient to conclusively determine the localization of iron within cells in regions of neuronal ischemia and hemorrhage. J. Magn. Reson. Imaging 2013;37:1409–1418. © 2012 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging)

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vRad taps new chief medical officer

AuntMinnie.com Headlines — Thu, 23 May 2013 17:58:08 +0100

Teleradiology services provider Virtual Radiologic (vRad) said it has appointed (more) (Source: AuntMinnie.com Headlines)

AJR: DBT reduces screening recall rates by 37%

AuntMinnie.com Headlines — Thu, 23 May 2013 17:56:44 +0100

Digital breast tomosynthesis (DBT) when used as a screening tool for breast (more) (Source: AuntMinnie.com Headlines)

BMJ: Megastudy links pediatric CT to higher cancer rates

AuntMinnie.com Headlines — Thu, 23 May 2013 15:49:46 +0100

The largest study to probe the effects of ionizing radiation since the atomic (more) (Source: AuntMinnie.com Headlines)

NLST update: CT sees twice the lung cancers of x-ray

AuntMinnie.com Headlines — Thu, 23 May 2013 15:27:42 +0100

A new analysis of data from the landmark 2011 National Lung Screening Trial (more) (Source: AuntMinnie.com Headlines)

RBMA: To thrive, imaging groups must dare to be different

AuntMinnie.com Headlines — Thu, 23 May 2013 14:20:38 +0100

Radiology practices face serious challenges in their efforts to be the preferred (more) (Source: AuntMinnie.com Headlines)

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Minimizing Hair Loss Due To Cancer Radiation Therapy

Health News from Medical News Today — Thu, 23 May 2013 07:00:00 +0100

Discovering that mouse hair has a circadian clock - a 24-hour cycle of growth followed by restorative repair - researchers suspect that hair loss in humans from toxic cancer radiotherapy and chemotherapy might be minimized if these treatments are given late in the day. The study, which appears in the early online edition of the Proceedings of the National Academy of Sciences (PNAS), found that mice lost 85 percent of their hair if they received radiation therapy in the morning, compared to a 17 percent loss when treatment occurred in the evening... (Source: Health News from Medical News Today)

Validation of intra- and interobserver reproducibility of shearwave elastography: Phantom study.

Ultrasonics — Thu, 23 May 2013 06:45:08 +0100

CONCLUSION: Quantitative US elastography for breast masses was highly reproducible with good agreement across operators. With respect to intraobserver reproducibility, ICC values varied but three out of four operators showed good agreement. PMID: 23466037 [PubMed - in process] (Source: Ultrasonics)

Video observation of anesthesia practice: a useful and reliable tool for quality improvement initiatives

Pediatric Anesthesia — Thu, 23 May 2013 04:00:00 +0100

ConclusionsAlthough video recording has been used to evaluate adherence to resuscitation protocols in both trauma and in neonatal resuscitation, (Pediatric Emergency Care, 26, 2010, 803; Pediatrics, 117, 2006, 658; Pediatrics, 106, 2000, 654) we believe this is the first time that video has been used to record before and after behaviors for an anesthesia quality improvement initiative. (Source: Pediatric Anesthesia)

Similar Circuits but Different Connectivity Patterns Between The Cerebellum, Basal Ganglia, and Supplementary Motor Area In Early Parkinson's Disease Patients and Controls During Predictive Motor Timing

Journal of Neuroimaging — Thu, 23 May 2013 04:00:00 +0100

CONCLUSIONSOur findings indicate that although early PD subjects and controls use similar functional circuits to maintain a successful outcome in predictive motor timing behavior, the type and strength of EC and its modulation by behavioral performance differ between these two groups. These functional differences might represent the first step of cortical reorganization aimed at maintaining a normal performance in the brain affected by early Parkinson's disease and may have implications for the neuro‐rehabilitation field. (Source: Journal of Neuroimaging)

MedWorm Sponsor Message: Have a look at The Radiology Daily, the new radiology portal powered by MedWorm, with all the latest radiology news and research updated daily.

Liver iron quantification by 3 tesla MRI: Calibration on a rabbit model

Journal of Magnetic Resonance Imaging — Thu, 23 May 2013 04:00:00 +0100

ConclusionBoth SIR and R2 are highly correlated with LIC in a novel rabbit model. MRI quantification of liver iron overload is feasible at 3T. J. Magn. Reson. Imaging 2013. © 2013 Wiley Periodicals, Inc. (Source: Journal of Magnetic Resonance Imaging)

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