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Abstract #4135

Prospective Evaluation of Contrast-Enhanced MRI for Non-traumatic, Non-appendicitis Acute Abdomen with Direct Comparison to MDCT

Candice A. Bookwalter 1 , Michael D. Repplinger 1,2 , Perry J. Pickhardt 1 , Jessica B. Robbins 1 , Timothy J. Ziemlewicz 1 , Douglas Kitchin 1,3 , and Scott B. Reeder 1,4

1 Department of Radiology, University of Wisconsin-Madison, Madison, WI, United States, 2 Department of Emergency Medicine, University of Wisconsin-Madison, Madison, Wisconsin, United States, 3 St. Mary's Hospitals, Madison, Wisconsin, United States, 4 Department of Medical Physics, University of Wisconsin-Madison, Madison, Wisconsin, United States

Prospective contrast-enhanced MRI and MDCT evaluation of 165 patients presenting with non-traumatic acute abdominal pain was obtained. Two experienced radiologists reviewed all available clinical and imaging data to derive an image-based diagnosis. A total of 62/165 (38%) patients were diagnosed with relevant imaging findings other than acute appendicitis. Of these, 30/62 (48%) of patients were diagnosed with a non-appendiceal gastrointestinal abnormality, 31/62 (50%) with a genitourinary abnormality, and 1/62 (2%) with an extra-abdominal abnormality.

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