CT colonography

noun

: a noninvasive medical imaging technique that uses computed tomography to visualize the interior of the colon and rectum especially to screen for polyps or cancerous growths

People putting off that colonoscopy just got some good news: Researchers at the University of Wisconsin School of Medicine have found that noninvasive CT colonography, which creates a 3D computer scan of the colon, can detect advanced polyps—the precursors to colorectal cancer—just as accurately.

—Matthew Shulman, U.S. News & World Report

also : a procedure utilizing CT colonography

Questionable findings revealed by stool testing, sigmoidoscopy or CT colonography should be confirmed by a colonoscopy.

—The Washington Post

Other procedures, such as CT colonographies, don't pick up the flat polyps on the right side of the colon very well …

—Amritha Alladi, The News-Star (Monroe, Louisiana)

Note: Both the technique and procedure are also called colonography and computed tomographic colonography.