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Radiology Iain D. C. Kirkpatrick, BSc, BSc (Med), MD Mervyn A. Kroeker, MD Howard M. Greenberg, MD Index terms: Arteries, superior mesenteric, 955.12916 Computed tomography (CT), angiography, 955.12916, 956.12916 Mesentery, CT, 792.1211 Mesentery, ischemia, 792.761, 955.789 Published online before print 10.1148/radiol.2291020991 Radiology 2003; 229:91–98 Abbreviations: AMI ⫽ acute mesenteric ischemia IMA ⫽ inferior mesenteric artery SMA ⫽ superior mesenteric artery 1 From the Department of Radiology, University of Manitoba Health Sciences Centre, 820 Sherbrook St, Winnipeg, Manitoba, Canada R3A 1R9. From the 2002 RSNA scientific assembly. Received August 10, 2002; revision requested October 23; final revision received February 14, 2003; accepted March 19. Address correspondence to I.D.C.K. (iain.kirkpatrick@stanford.edu). Biphasic CT with Mesenteric CT Angiography in the Evaluation of Acute Mesenteric Ischemia: Initial Experience1 PURPOSE: To evaluate the sensitivity and specificity of biphasic computed tomography (CT) with mesenteric CT angiography in the diagnosis of acute mesenteric ischemia (AMI). MATERIALS AND METHODS: Sixty-two patients with clinically suspected AMI underwent prospective imaging with biphasic multi– detector row CT. Mesenteric CT angiography was performed with 1.25-mm collimation starting 25 seconds after 140 mL of intravenous contrast agent was administered at a rate of 4 mL/sec, followed by portal venous phase imaging with 5-mm collimati ...
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