Computed tomography, more commonly known as a CT or CAT scan, is a diagnostic medical test. x-rays, produces multiple images or pictures of the inside of the body. The cross-sectional images generated during a CT scan can be reformatted in multiple planes, and can even generate three -dimensional images.These images can be viewed on a computer monitor, printed on film or transferred to a CD or DVD. CT images of internal organs, bones, soft tissue and blood vessels typically provide greater detail than traditional x -Rays, particularly of soft tissues and blood vessels. CT colonography, also known as virtual colonoscopy, uses low dose radiation. CT scanning to obtain an interior view of the colon (the large intestine) that is otherwise only seen with a more invasive procedure where an endoscope is inserted into the rectum and passed through the entire colon. The major use of colonography is to screen for polyps or cancers in the large intestine.
- No special preparation required