Exams: Computed Tomography

Virtual Colonoscopy

What is Virtual Colonoscopy?
Virtual Colonoscopy is a colonoscopy performed using a CT scanner. With CT scanning, the exam table and patient move through the scanner while a set of x-ray beams and detectors rotate around you. The scanner uses computer software to process the images, or slices of your body, creating detailed three-dimensional images of your abdomen and pelvis. There is no sedation necessary and no recovery period. However, if significant polyps are found, they will need to be removed using conventional colonoscopy.

How should I prepare for the procedure?
Please wear loose, comfortable clothing. You will be asked to wear a gown during the exam. Any metal objects must be removed before the exam. A bowel prep will be given to you to take.

What will I experience during the procedure?
You will be positioned on a CT table, usually lying flat on your back. Pillows may be used to help place you in the correct position. A very small, flexible tube will be placed two inches into your rectum to allow air to be pumped into your colon, possibly giving the feeling of fullness or as if you need to pass gas. The table will be moved through the scanner during the procedure. You will be alone in the room during the exam, but will be able to talk to your technologist at all times. The exam usually takes only 15 minutes.

Who interprets the Virtual Colonoscopy?
A board certified radiologist will analyze the images and send a signed report to your primary care or referring physician, who will share the results with you.