computed tomographic colonography

:  ct colonography The radiologists have their own procedure—the computed tomographic colonography (CTC), or virtual colonoscopy. It uses X-rays and computers to produce multiple images of the inside of the colon.—The Boston Globe, 13 Mar. 2008 Tests that detect both pre-cancerous polyps and cancer include colonoscopy, flexible sigmoidoscopy, double-contrast barium enema, and computerized tomographic colonography …—Food & Fitness Advisor, May 2008 You're right about the president having a virtual colonoscopy (which is a nickname; the more formal term is computed tomography colonography).—Robert J. Mayer, Harvard Health Letter, June 2010