What Student Need to Know about Virtual Colonoscopy In Radio Diagnosis.

A virtual colonoscopy, also called CT colonography, is a special type of computed tomography scan that is offered as an alternative to a conventional colonoscopy. As a colon cancer screening test for people at average risk, a virtual colonoscopy is comparable to a conventional colonoscopy in its ability to detect colon cancer and polyps (at least those larger than 6 mm in diameter). It differs in a few ways, however, including how it is performed: A virtual colonoscopy uses a series of X-rays to create a 3-dimensional image of the inside of the colon, rather than requiring the insertion of a scope through the rectum and colon (large intestine). Differences between virtual and conventional colonoscopy include: • VC can view the colon from many different angles. This is not as easy with regular colonoscopy. • VC does not require sedation. You can usually go back to your normal activities right away after the test. Regular colonoscopy uses sedation and often the loss of a work day. • VC using CT scan