Hyperattenuating Signs at Unenhanced CT Indicating Acute Vascular Disease
نویسندگان
چکیده
منابع مشابه
Mimics of renal colic: alternative diagnoses at unenhanced helical CT.
During the past decade, unenhanced computed tomography (CT) has become the standard of reference in the detection of urinary calculi owing to its high sensitivity (>95%) and specificity (>98%) in this setting. Numerous diseases may manifest as acute flank pain and mimic urolithiasis. Up to one-third of unenhanced CT examinations performed because of flank pain may reveal unsuspected findings un...
متن کاملUnenhanced multidetector CT evaluation of urinary stones and secondary signs in pediatric patients.
PURPOSE This retrospective study evaluated the unenhanced multi-detector computed tomography (MDCT) findings of urinary system calculi and the secondary signs associated with ureteral stones in children. MATERIALS AND METHODS The study included 87 children (54 boys, 32 girls) with a mean age of 89 months (range: 5 months to 16 years) who were referred to us from various departments and were e...
متن کاملNormal ureter size on unenhanced helical CT.
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...
متن کاملConspicuity of renal calculi at unenhanced CT: effects of calculus composition and size and CT technique.
PURPOSE To determine the effects of calculus size, composition, and technique (kilovolt and milliampere settings) on the conspicuity of renal calculi at unenhanced helical computed tomography (CT). MATERIALS AND METHODS The authors performed unenhanced CT of a phantom containing 188 renal calculi of varying size and chemical composition (brushite, cystine, struvite, weddellite, whewellite, an...
متن کاملThe value of unenhanced CT in the diagnosis of acute appendicitis.
OBJECTIVE To establish the accuracy of unenhanced CT in the preoperative diagnosis of acute appendicitis. DESIGN Accuracy study, prospective and blinded. SETTING The University Hospital. PARTICIPANTS 52 patients with clinical and laboratorial manifestations of acute appendicitis. CT diagnosis was made by: presence of an abnormal appendix, appendiceal calculi with pericecal phlegmon or alt...
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ژورنال
عنوان ژورنال: RadioGraphics
سال: 2010
ISSN: 0271-5333,1527-1323
DOI: 10.1148/rg.301095052