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Colon Carcinoma: MR Imaging with CO₂ Enema—Pilot Study¹

¹ From the Departments of Radiology (D.J.L., R.R.S., M.J.G., A.K.D.) and Surgery (R.M., N.R.H.), University of Cambridge and Addenbrooke’s Hospital, Box 219, Hills Rd, Cambridge, CB2 2QQ, England. Supported in part by a grant from Smith’s Charity. Received April 6, 2000; revision requested May 31; revision received August 23; accepted September 19. Address correspondence to D.J.L. (e-mail: djl15@radiol.cam.ac.uk).

Prior to surgery, seven patients with known colonic tumors underwent breath-hold single-shot fast spin-echo magnetic resonance imaging during a CO₂ enema. The images were evaluated for depiction of tumor, adjacent structures, and the remaining colon, and findings were compared with findings at surgery. In all seven patients, the tumor was demonstrated, and in four (57%), breach of the muscularis propria was correctly predicted.

Index terms: Carbon dioxide • Colon, MR, 75.121411 • Colon neoplasms, 75.311, 75.321

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