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CancerQuest > Introduction to Patient Information > Introduction to Cancer Detection and Diagnosis > Colonoscopy: Introduction > Virtual Colonoscopy: Preparation and Procedure

Virtual Colonoscopy: Preparation and Procedure

Preparation
The preparation is simlar to that of a traditional colonoscopy.  Before the exam patients must remove any stool from the colon. Also, an oral contrasting agent is taken the day before the examination to increase image quality. 

Procedure
A small enema tip is inserted into the patient's rectum to introduce air into the colon; this is the only invasive part of the exam. The rest of the exam consists of a series of x-rays that are taken while the patient is positioned comfortably on their back and stomach.^{(1) (2)}

Other than the temporarily feeling of abdominal cramping or gas pains from the air inserted into colon, the exam is easy and painless. The exam is also quick and because no anesthesia is needed the patient can resume normal activities immediately after a virtual colonoscopy. Colon perforation is not a risk because the exam is non-invasive.^{(1) (2)}

References for this page:

1. "Virtual Endoscopy." Radiology Regional Center. [http://www.radiologyregional.com/virtualcolonoscopy.html ]
2. "Virtual Colonoscopy." The Center for Virtual Colonoscopy at Boston Medical Center. [http://www.virtualcolonoscopy.net/ ]