CT Colonography Scan

A virtual colonoscopy, or Computed Tomography (CT) colonography examines the large intestine for cancer or growths using x-ray equipment.

Before the Procedure

Consult your physician regarding dietary restrictions and instructions for preparing for the CT Colonography. Women should always inform their radiologist if there is any possibility they may be pregnant. You will be given a gown to wear and asked to remove jewelry, hearing aids and removable dental work. Women will be asked to remove bras containing metal underwire. Depending on the type of cardiac CT you are receiving, you may be given a medicine, either by mouth or IV, to slow your heart rate.

During the Procedure

A large majority of patients may feel pressure on their colon when it is inflated for the examination. The pressure may feel like the need to pass gas, and significant pain is uncommon. The table will move quickly through the CT scanner. The scans are sent to a special computer which processes the data to create two-dimensional images of your body, which are then displayed on a monitor.

You will be alone in the room during the CT scan. Sometimes a parent may stay in the room with their child. Patients may be asked to hold their breath for small moments while images are recorded. The entire scan is usually completed within 10 minutes.

After the Procedure

When the exam is complete, you will be asked to wait until the technologist verifies that the images are of high enough quality for accurate interpretation. After the images have been interpreted, your radiologist or referring physician will discuss the findings with you.