Unenhanced computed tomography (CT) is currently being widely used for the evaluation of patients presenting with acute flank pain. A variety of primary and secondary findings detected on unenhanced CT contribute not only to the diagnosis but also to the treatment plan. This review includes primary and secondary multidetector CT imaging findings of urinary stone disease, potential pitfalls with...

PURPOSE To evaluate the use of magnetization transfer and the apparent enhancement of lesions on contrast-enhanced MR images in patients with multiple sclerosis. METHODS Contrast-enhanced T1-weighted spin-echo MR images obtained in 20 patients with relapsing-remitting multiple sclerosis, with and without magnetization transfer, were evaluated to determine the number of enhancing plaques. Comp...

OBJECTIVE Unenhanced helical CT is the imaging method of choice when evaluating patients with acute flank pain and suspected ureterolithiasis. In addition to directly identifying stones in the lumen of the ureter, CT secondary signs of obstruction such as ureteral dilatation are frequently present and can be helpful in establishing a diagnosis. The purposes of this study were to define ureteral...

BACKGROUND AND PURPOSE It is important to recognize a perimesencephalic pattern of hemorrhage in patients with subarachnoid hemorrhage (SAH), because in 95% of these patients the cause is nonaneurysmal and the prognosis is excellent. The purpose of this study was to investigate whether CT angiography can accurately exclude vertebrobasilar aneurysms in patients with perimesencephalic patterns of...

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OBJECTIVES To determine the proportion of correctly diagnosed ureteric calculi and alternate diagnoses using unenhanced low dose multidetector CT KUB. DESIGN Descriptive - prospective study. SETTING Aga Khan University Hospital, Nairobi between November 2006 and October 2007. SUBJECTS One hundred and four patients underwent low dose multi-detector computed tomography (MDCT) KUB. RESULTS...