How is Virtual Colonoscopy Different from Traditional Colonoscopy?
With traditional colonoscopy, a slender, flexible tube about the thickness of a finger is inserted into the rectum and is advanced thorough the entire colon. The tube is connected to a video camera and light source so the physician can examine the inside of the colon. An advantage of traditional colonoscopy is that any discovered tumors can be removed or biopsied during this procedure. The patient is given a sedative before the procedure to reduce worry and discomfort. Afterwards, the patient must wait for the sedative to wear off. Another driver must accompany the patient to provide safe transportation home. The patient usually misses a day of work. Total time required in the endoscopy suite is 1 1/2 to 2 hours. With Virtual Colonoscopy, a small tube the size of a soda straw is inserted into the rectum, and the colon is filled with carbon dioxide gas to make it easier to view. The patient may feel mild abdominal cramping and fullness, but most find the procedure more comfortable than
