A scan can be used to diagnose possible appendicitis and kidney stones if the ultrasound results are unclear. The problem: Some doctors recommend CT colonography, or "virtual colonoscopy," over ...

CT colonography is a less invasive, better targeted and sufficiently accurate alternative to colonoscopy for colorectal cancer (CRC) screening in the general population. Daniele Regge and ...

For PET/CT colonography, rectal water filling was preferred to CO 2 or air inflation for bowel distension, as the absorption of gas between scans might lead to differences in bowel distension.

Several studies, including a randomized controlled trial from the Netherlands (JW Gastroenterol Jan 6 2012), have now reported the performance of laxative-free computed tomographic colonography (CTC).