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Virtual colonoscopy - ready for prime time?

Posted on September 18, 2008

Virtual colonoscopy is an x-ray examination of the colon used to screen for cancer. It is also called CT colonography because the x-ray test used is a CT scan (also called computed tomography or CAT scan for computed axial tomography). Virtual colonoscopy is in the news because of a study published in the New England Journal of Medicine (NEJM) that compared the x-ray test to traditional colonoscopy and found comparable results in terms of identifying abnormal growths. But while the headlines will tout the positive findings, there are a few things you should know before undergoing one of the...

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cancer , sleep