Academic radiology
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The aim of this study was to evaluate the feasibility of quantitative analysis of dynamic contrast-enhanced magnetic resonance imaging (DCE-MRI) data in the detection of bowel inflammation in patients with Crohn's disease. ⋯ These preliminary results demonstrate that the quantitative analysis of DCE-MRI data is possible for the assessment of bowel inflammation in patients with Crohn's disease. Future studies need be performed on larger numbers of patients to correlate the severity and type of inflammation with kinetic parameters.
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To investigate the contribution of chemical shift magnetic resonance imaging for assessment of the margins of solid breast masses by benefiting from India ink artifact. ⋯ Chemical shift subtraction can contribute to routine dynamic contrast subtraction in morphologic analysis particularly for the evaluation of margins of benign lesions in fatty breasts. It can also help in morphologic analysis of masses in dense breast.
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Comparative Study
Comparison of image quality and arterial enhancement with a dedicated coronary CTA protocol versus a triple rule-out coronary CTA protocol.
To compare the image quality of dedicated coronary computed tomography angiography (cCTA) to that of triple rule-out (TRO) CTA designed to evaluate the coronary arteries, thoracic aorta, and pulmonary arteries. ⋯ A TRO-CTA protocol using 95 mL of contrast can provide comparable coronary image quality and coronary vascular enhancement as compared to dedicated cCTA with 70 mL of contrast.
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At the authors' level 1 trauma center, postgraduate year 3 and 4 radiology residents interpret urgent overnight imaging studies, which are reviewed by attending radiologists the next morning. The goals of this study were to determine the discrepancy rate for torso computed tomography between resident radiologists' preliminary interpretations and attending radiologists' final interpretations and to identify adverse patient events secondary to the delayed diagnoses. ⋯ At the authors' institution, there was a 2.0% discrepancy rate between residents' preliminary interpretations and attending radiologists' final interpretations of overnight torso computed tomography, with a small rate of additional intervention as a result of the major discrepancies. No adverse patient effects were directly attributable to discrepant interpretations. In discrepant cases, there was a 15% disagreement rate (17 of 112) between attending radiologists, suggesting some degree of interreader variance in interpretation. In addition, this disagreement rate among attending radiologists may imply that these cases were complex. Because there is educational value in overnight call, independent radiology resident coverage should continue.
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Most studies of computer-aided detection (CAD) for pulmonary nodules have focused on solid nodule detection. The aim of this study was to evaluate the performance of a commercially available CAD system in the detection of pulmonary nodules with or without ground-glass opacity (GGO) using 64-detector-row computed tomography compared to visual interpretation. ⋯ Radiologists are significantly superior to this CAD system in the detection of GGO, but the CAD system can still play a complementary role in detecting nodules with or without GGO.