What Is A Virtual Colonoscopy?
A virtual colonoscopy is a CT-based exam that creates images of the colon. It may help identify polyps, growths, or other colon findings that may require follow-up.
Unlike a traditional colonoscopy, virtual colonoscopy does not use sedation and does not involve advancing a scope through the entire colon. The colon is gently inflated so the CT scanner can capture clearer images.
If a significant finding is identified, a follow-up traditional colonoscopy may be needed to remove or biopsy a polyp.
Why Consider A Virtual Colonoscopy?
A virtual colonoscopy may be considered by people who want a CT-based colon screening option or who prefer to avoid sedation when appropriate.
It may be relevant for people who are due for colon screening, have a family history of colon polyps or colon cancer, or have been advised to consider colon evaluation. Some people may also consider virtual colonoscopy if a traditional colonoscopy was not completed or is not preferred.
Virtual colonoscopy is a screening tool. It does not replace medical evaluation for symptoms such as rectal bleeding, unexplained weight loss, severe abdominal pain, or major bowel habit changes.
How Is A Virtual Colonoscopy Performed?
A virtual colonoscopy requires bowel preparation before the appointment so the colon can be seen clearly. During the exam, a small tube is placed a short distance into the rectum to gently inflate the colon with air or carbon dioxide.
You then lie on the CT table while the scanner captures images. The scan itself is usually quick. No sedation is used, so there is no sedation recovery period.
What To Expect After A Virtual Colonoscopy
After the scan, you can usually return to normal activities. Some people feel temporary bloating or gas after the colon is inflated.
Your results are reviewed and organized into a report. If the scan identifies a polyp or another finding, your healthcare provider may recommend a traditional colonoscopy or additional follow-up.
Frequently Asked Questions About Virtual Colonoscopy
Is virtual colonoscopy the same as CT colonography?
Yes. Virtual colonoscopy is also called CT colonography.
Does virtual colonoscopy require sedation?
No. Virtual colonoscopy does not require sedation, so there is no sedation recovery period.
Does virtual colonoscopy require bowel prep?
Yes. Bowel preparation is needed so the colon can be seen clearly on CT images.
What happens if a polyp is found?
If a clinically significant polyp or finding is identified, a traditional colonoscopy may be needed for removal, biopsy, or further evaluation.
