Virtual Colonoscopy
If you are over the age of 50, the American Cancer Society recommends getting screened for colorectal cancer. Many people choose a colonoscopy, the gold standard for screening and prevention. There is, however, another option: virtual colonoscopy.
Computed tomography (CT) colonography, also known as virtual colonoscopy, uses special X-ray equipment to examine the large intestine for cancer and growths called polyps. Sometimes, polyps may grow and turn into cancers.
Overall, virtual colonoscopy is a less invasive procedure and an equally effective alternative to standard colonoscopy. Unlike traditional colonoscopy, which requires a scope to be inserted into your rectum and advanced through your colon, virtual colonoscopy only requires a small tube to be inserted a short distance into the rectum. From there, the CT scan is able to produce cross-sectional images, called slices, of your abdominal organs.
What to expect from the procedure
In the Virtual Colonoscopy, a CT scanner is used to produce two and three dimensional images of the entire bowel or map of the entire colon.
Prior to your procedure, you will be asked to pick up a preparation kit that will help you cleanse your bowels. Kits typically include oral contrast agents, which are special materials that will coat your colon. These contrast agents are essential for the exam as they make the pictures much clearer for the radiologist. You will also be asked to take a laxative and restrict your diet to clear liquids the day before the examination.
During the procedures, you will be asked to lie down on your side (or back) on the CT scanner table. To distend your bowels, a nurse or technologist will administer CO2 gas by placing a small soft tube inside your rectum. Images will then be taken.
Once the procedure is complete, the radiologist will analyze the pictures and send the report to your referring physician. You may return to your normal activities immediately.
Although virtual colonoscopy is an effective option, it is not necessarily the best option for every patient. Your doctor can help determine whether virtual colonoscopy is the right option for you.
Triad Radiology offers Virtual Colonoscopy at a variety of locations, including hospitals, imaging centers, and clinics. Contact us if you want to learn more or schedule an appointment.
