Computed Tomography (CT) Scan of the Body

A computed tomography (CT) scan uses Reference X-rays Opens New Window to make detailed pictures of structures inside of the body.

During the test, you will lie on a table that is attached to the CT scanner, which is a large doughnut-shaped machine. The CT scanner sends X-rays through the body area being studied. Each rotation of the scanner provides a picture of a thin slice of the Reference organ Opens New Window Reference Opens New Window or area. All of the pictures are saved as a group on a computer. They also can be printed.

In some cases, a dye called Reference contrast material Opens New Window may be used. It may be put in a vein (Reference IV Opens New Window) in your arm, or it may be placed into other parts of your body (such as the Reference rectum Opens New Window or a joint) to see those areas better. For some types of CT scans you drink the dye. The dye makes structures and organs easier to see on the CT pictures.

A CT scan can be used to study all parts of your body, such as the chest, belly, pelvis, or an arm or leg. It can take pictures of body organs, such as the liver, Reference pancreas Opens New Window, Reference intestines Opens New Window, Reference kidneys Opens New Window, Reference bladder Opens New Window, Reference adrenal glands Opens New Window, lungs, and heart. It also can study blood vessels, bones, and the spinal cord.

Reference Fluoroscopy Opens New Window CT is a special test that is not widely available. It uses a steady beam of X-rays to look at movement within the body. It allows the doctor to see your organs move or to guide a Reference biopsy Opens New Window needle or other instrument into the right place inside your body.

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This information does not replace the advice of a doctor. Healthwise, Incorporated disclaims any warranty or liability for your use of this information. Your use of this information means that you agree to the Reference Terms of Use. Reference How this information was developed to help you make better health decisions.