Computerized axial tomography scan

Computerized Axial Tomography Scan (also known as CAT Scan or CT Scan) is a medical imaging procedure that uses computer-processed combinations of many X-ray measurements taken from different angles to produce cross-sectional (tomographic) images (virtual 'slices') of specific areas of a scanned object, allowing the user to see inside the object without cutting.

Overview

The Computerized Axial Tomography Scan is a diagnostic imaging procedure that uses a combination of X-rays and computer technology to produce horizontal, or axial, images (often called slices) of the body. A CT scan shows detailed images of any part of the body, including the bones, muscles, fat, and organs. CT scans are more detailed than general X-ray examinations.

Procedure

During a Computerized Axial Tomography Scan, the patient lies on a table and the X-ray machine moves around the patient. Small detectors inside the machine measure the amount of X-rays that make it through the part of the body being studied. A computer takes this information and uses it to create several individual slices of the area. The computer stacks these scans one on top of the other to create a detailed image of the inside of the body.

Uses

Computerized Axial Tomography Scan is used to detect a variety of diseases and conditions. CT scans can be used to visualize nearly all parts of the body and is used to diagnose disease or injury as well as to plan medical, surgical or radiation treatment.

Risks

Like all imaging procedures, Computerized Axial Tomography Scan carries the risk of radiation exposure. The amount of radiation a person is exposed to during a CT scan can vary, depending on the size of the area being scanned, the type of machine used, and the person's size and age.

See Also

• Magnetic Resonance Imaging
• Ultrasound
• Positron Emission Tomography
• Radiology

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