Our Virtual colonoscopy Main Article provides a comprehensive look at the who, what, when and how of Virtual colonoscopy

Definition of Virtual colonoscopy

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Virtual colonoscopy: A method for examining the colon by taking a series of x-rays and then using a computer to reconstruct three-dimensional pictures (a CT scan) of the interior surfaces of the colon from these x-rays. The pictures can be saved, manipulated to better viewing angles, and reviewed after the procedure. The procedure requires a 48-hour low-fiber diet and a complete bowel cleansing. If something suspicious is noted, a regular colonoscopy is needed to biopsy or remove it. Virtual colonoscopy results in about 15% false positives (misleading readings that unnecessarily require a regular colonoscopy). It is also not yet known whether virtual colonoscopy can reliably detect flat adenomas which, like polyps, can give rise to colon cancer. Also called computed tomography or CT colography.

Common Misspellings: virtual clonoscopy, virtual colonscopy

Suggested Reading by Our Doctors

• Colonoscopy - Learn about the colonscopy procedure, what it is, why it is performed, preparation, complications, alternatives and the after effects of the screening exam on MedicineNet.com
• Abdominal Pain - Learn about abdominal pain (pain in the stomach / abdomen) including causes, symptoms, how abdominal pain is diagnosed, and how abdominal pain is treated.
• Colon Cancer Screening - Colon cancer screening include colonoscopy, fecal occult blood tests, flexible sigmoidoscopy, virtual colonoscopy, and air contrast barium enema.

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