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PURPOSE To determine the diagnostic utility of delayed hypointensity and delayed enhancing rim on magnetic resonance imaging (MRI) as indicators of hepatocellular carcinoma (HCC) in arterially enhancing nodules < or =5 cm in the cirrhotic liver and determine the features that best predict HCC. MATERIALS AND METHODS Gadolinium-enhanced MRI studies(More)
PURPOSE To retrospectively assess the diagnostic performance of magnetic resonance cholangiopancreatography (MRCP) performed by using a high-spatial-resolution isotropic three-dimensional (3D) fast-recovery fast spin-echo (FSE) sequence with parallel imaging for the evaluation of possible biliary disease. MATERIALS AND METHODS This HIPAA-compliant study(More)
PURPOSE Treatment strategies for stress incontinence are based on the concept that urethral mobility is the predominant causal factor with sphincter function a secondary contributor. To our knowledge the relative importance of these 2 factors has not been assessed in properly controlled studies. MATERIALS AND METHODS The Research on Stress Incontinence(More)
OBJECTIVE The purpose of our study was to determine the accuracy of MRI for preoperative staging of renal cell carcinoma using the 1997 TNM classification. MATERIALS AND METHODS We conducted a retrospective review of MRI performed in 40 consecutive patients with 42 renal cell carcinomas before radical (n = 35) or partial (n = 4) nephrectomy or exploratory(More)
OBJECTIVE The purpose of this study was to evaluate stone detection, assessment of secondary signs of stone disease, and diagnostic confidence utilizing submillisievert CT with model-based iterative reconstruction (MBIR) in a North American population with diverse body habitus. MATERIALS AND METHODS Fifty-two adults underwent stone CT using a split-dose(More)
Sixty-two patients underwent magnetic resonance (MR) imaging of the liver with the automated contrast material bolus-detection technique. Arterial phase MR images were assessed quantitatively and qualitatively. In 23 patients, a test bolus of contrast material was injected intravenously before dynamic MR imaging. There was good correlation and agreement(More)
PURPOSE To determine the prevalence of protected health information (PHI) in PowerPoint presentations available for downloading from the Internet. MATERIALS AND METHODS No institutional review board approval was needed for this project, which involved no patient subjects. Two Google searches, each limited to PowerPoint files, were performed by using the(More)
OBJECTIVE To use magnetic resonance images of living women and 3-dimensional modeling software to identify the component parts and characteristic features of the external anal sphincter (EAS) that have visible separation or varying origins and insertions. METHODS Detailed structural analysis of anal sphincter anatomy was performed on 3 pelvic magnetic(More)