Virtual colonoscopy aka CT Colonography explained

There are many ways to skin cat and many ways to image the colon. Barium enema is quickly becoming a thing of the past and being replaced by CT colonography, also called virtual colonoscopy. In this video podcast Jon Lund talks to Dr Rajeev Singh about this increasingly common imaging technique, its advantages and disadvantages, its sensitivity and specificity for detecting lesions in the colon and its future. The discussion is illustrated with images taken from CT colonography investigations. This podcast will be useful to medical students and trainees in surgery or radiology, as well as long in the tooth surgeons wanting an update on newer techniques.
Dr Rajeev Singh is a consultant radiologist at the Royal Derby Hospital, UK, with a special interest in gastrointestinal imaging. Jn Lund is Associate Professor of Surgery at the University of Nottingham, UK.