The largest study of the efficacy of virtual colonoscopy (CT colonography) in Americans ages 65 and older, published online Feb. 23 in Radiology, has confirmed the “virtual” exam is comparably effective to standard colonoscopy at detecting colorectal cancer and precancerous polyps in older seniors. Due to these results, those of a landmark 2008 study in the New England Journal of Medicine involving patients ages 50 and older, and the multitude of trials with similar positive outcomes since, the Colon Cancer Alliance and American College of Radiology call on Medicare to cover seniors for virtual colonoscopy.......> Full story