What is a Virtual Colonoscopy?
A virtual colonoscopy, also known as CT colonography, is a non-invasive medical imaging procedure used to examine the interior and exterior of the colon and rectum. This technique employs computed tomography (CT) scanning to generate detailed, three-dimensional images of the colon. During the procedure, a small tube is inserted into the rectum to inflate the colon with air or carbon dioxide, enhancing image clarity. Virtual colonoscopy is commonly used for detecting polyps, tumors, and other abnormalities, offering a safer and less uncomfortable alternative to traditional colonoscopy, while still providing high diagnostic accuracy.
What does a Virtual Colonoscopy show?
Virtual colonoscopies can show ulcers, polyps, and cancers. Screening may find diseases at an early stage, when a doctor has a better chance of curing the disease. A virtual colonoscopy provides a more complete view of the entire colon as it shows both the inside and outside of the colon whereas a traditional colonoscopy will only show the inside of the colon.
Why Choose a Virtual Colonoscopy?
- Virtual Colonoscopies are safe, effective screening methods approved by the American Cancer Society.
- It is less invasive, as it does not require the insertion of a long tube throughout the colon. This significantly reduces discomfort.
- It eliminates the need for sedation or anesthesia, allowing clients to resume normal activities immediately after the procedure.
- The procedure itself is quicker, often taking only about 10-15 minutes.
- There’s a lower risk of bowel perforation.
- Virtual tests are able to avoid blockages that traditional colonoscopies may encounter and may not be able to get passed.
- A virtual colonoscopy provides high-resolution, detailed images of the colon and surrounding areas for a more complete view of the entire colon, aiding in the detection of polyps, tumors, and other abnormalities.
- A physician referral is not required for our virtual colonoscopy.
Colorectal cancer is the leading cause of cancer-related deaths in men and the second in women under age 50 years old.
Frequently Asked Questions
Who should get a virtual colonoscopy?
Most healthcare professionals recommend screening for colon and rectal cancer beginning at age 45 if you don’t have health problems or other factors that make you more likely to develop colon cancer. If you are at high risk for bowel perforation, are taking blood thinning medication, cannot undergo a traditional colonoscopy, or feel uncomfortable with the traditional procedure, you may be a good candidate for an alternative method.
Do I still have to do the prep for a virtual colonoscopy like I would a traditional colonoscopy?
Yes. Both tests require a clean colon. That means you can only have clear liquids the day before the test, and you will have to take a laxative solution as directed. Don’t worry though. We’ll provide you with the exact protocol to be followed when your appointment is scheduled.
Which is better - a virtual colonoscopy or a traditional colonoscopy?
Research has shown that both virtual and traditional colonoscopy exams are good options to check for and prevent colorectal cancer. A virtual colonoscopy is less invasive and often preferred for this type of testing. According to Robert Bresalier, M.D., professor of Gastroenterology, Hepatology and Nutrition at MD Anderson, “Colorectal cancer screening is so important because it saves lives.” He says “The most common symptom of colon cancer is no symptom at all. Screening allows us to detect it.”
How is a virtual colonoscopy performed?
A specially trained CT technician performs a virtual colonoscopy with no need for anesthesia. According to the NIH, during the procedure, you will lie on a table while the technician inserts a thin tube through your anus and into your rectum. The tube inflates your large intestine with air for a better view. The table slides into the CT machine where the technician takes the images. You may be asked to hold your breath several times during the procedure and you will be asked to turn over on your side or stomach so they can take different images of the large intestine. The procedure only lasts about 10 to 15 minutes. If any issues are detected, follow-up with your physician will be required.