Virtual colonoscopy is an advanced and highly accurate screeing method used to detect colon cancer. Safer, quicker and less invasive than conventional colonoscopy, this technique uses a 60 second CT scan of the abdomen, along with 3D reconstructed images, to view the inside of the colon.
The radiologist analyses these images to identify the presence of polyps in the colon. Polyps are small growths that may become cancerous if they are not removed.
According to a recent study published in the New England Journal of Medicine,"...virtual colonoscopy detected more than 90% of all significant polyps, performing slightly better than conventional colonoscopy."
Virtual Colonoscopy
Conventional (Optical Colonoscopy)
1.5 inch long probe required for colon inflation
6 foot long probe required to view entire colon
No risk of bowel perforation
Small risk of bowel perforation
Scan takes approximately 60 seconds
Procedure takes approximately 30 minutes
No sedation required
You may be sedated
Little or no recovery time needed
Recovery time needed
Entire colon can be viewed
May result in incomplete screening
Please note that virtual colonoscopy is strictly a screening procedure. Because of its non-invasive nature, it is not possible to take tissue samples or remove polyps during the procedure. If evidence of polyps is found, you will be referred for a conventional colonoscopy.
Risk factors for developing colon cancer include age (men and women over 50), a family history of cancer, a diet high in fat and low in fibre and physical inactivity.
