CT and MR Colonography

CT or MR colonography, first described as virtual colonoscopy by Vining in 1994, is a non-invasive imaging method that uses CT or MR data sets combined with specialised imaging software to examine the colon. Various names have been given to virtual colonoscopy, including CT pneumocolon and CT or MR colonography. Since 2002, CT colonography (CTC) and MR colonography (MRC) have been definitively included as standard reference terms in medical databases.