Computed tomography (CT), also referred to as computerized axial tomography (CAT), is an x-ray technique that uses a special scanner and a computer to create cross-sectional images of the body. Unlike standard x-rays, which take a two dimensional projected picture of the part of the body being examined, the CT has the ability to image that same structure as a series of cross-sectional images.

The CT Scan produces clearer, more detailed images of the part of the body being examined than can be accomplished by x-rays and is the preferred cross-sectional imaging test in most cases for examination of the chest, abdomen, pelvis, sinus, ear and some bones.