Computed tomography (CT) scans are completed with the use of a 360-degree x-ray beam and computer production of images. These scans allow for cross-sectional views of body organs and tissues.

CT scans are used to image a wide variety of body structures and internal organs. Since the 1990s, CT equipment has become more affordable and available. In some diagnoses, CT scans have become the first imaging exam of choice. Because the computerized image is so sharp, focused, and three-dimensional, many tissues can be better differentiated than on standard x rays. The CT scan can show details of sinusitis, and bone fractures. Physicians may order CT of the sinuses to provide an accurate map for surgery. Brain scans can detect tumors and strokes. The introduction of CT scanning, especially spiral CT, has helped reduce the need for more invasive procedures.

CT scans of the body...