Radiology, Vol 199, 632-636, Copyright © 1996 by Radiological Society of North America

ARTICLES

Acute mesenteric ischemia: diagnosis with contrast-enhanced CT

PG Taourel, M Deneuville, JA Pradel, D Regent and JM Bruel
Department of Medical Imaging, Hopital Saint-Eloi, Montpellier, France.

PURPOSE: To evaluate the accuracy of dynamic, contrast material- enhanced computed tomography (CT) in the diagnosis of acute mesenteric ischemia. MATERIALS AND METHODS: Reviewers blinded to patient diagnoses retrospectively compared the CT scans in a study group with those in a control group. The study group comprised 39 consecutive patients (23 men, 16 women; aged 55-88 years) with surgically proved acute mesenteric ischemia. The control group comprised 24 patients (13 men, 11 women; aged 50-82 years) with suspected acute mesenteric ischemia that was disproved at surgery. RESULTS: For the diagnosis of acute mesenteric ischemia, each of the following findings had a specificity of more than 95% and a sensitivity of less than 30%: arterial or venous thrombosis, intramural gas, portal venous gas, focal lack of bowel-wall enhancement, and liver or splenic infarcts. When CT was used in the diagnosis of suspected acute mesenteric ischemia, the detection of at least one of these signs resulted in a sensitivity of 64% (25 of 39; confidence interval, 0.49, 0.79), a specificity of 92% (22 of 24; confidence interval, 0.81, 1.00), and an accuracy of 75% (47 of 63; confidence interval, 0.64, 0.86). CONCLUSION: Dynamic, contrast- enhanced CT is a valuable tool in the diagnosis of and determination of prognosis in acute mesenteric ischemia.

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