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CT Colonography

A CT scan of the colon, also known as virtual colonoscopy, is used to detect colon masses or polyps.

How do I prepare for the exam?

Full bowel cleanse and NPO (nothing to eat). Your physician office will provide you with information on where to get the bowel cleanse prep kit (GoLytley or NuLytley). You will be asked to put on a hospital gown.

What can I expect during the exam?

This exam is conducted by a radiologic technologist specially trained in CT and a radiologist.

You will be placed on your side on the CT table. The technologist will insert a small catheter in your rectum and fill your colon with air to distend the colon. During this part of the exam, it is not unusual to feel some abdominal cramping and discomfort. The technologist may ask you to lie in different positions to best visualize all portions of the colon.

The exam will take about 30 to 60 minutes.

What can I expect after the exam?

Your scan will be read by a radiologist and a written report will be sent to your physician, who will contact you with results.