TEST ACRONYM

FULL TERMINOLOGY

Computed Tomography (CT) Scan

DEFINITION

Used diagnostically, the CT scanner takes a series of x-ray pictures, which are combined by a computer to create extremely detailed, cross-sectional images of your internal organs or other parts of your body that cannot be examined with conventional x-rays.

WHEN TEST WOULD BE PERFORMED

The scan is used to detect tumors, determine the stage of the disease and whether cancerous cells have spread, and find out about the effectiveness of cancer treatment. CT scans are also used to guide some types of biopsies (the removal of a small amount of tissue for examination to determine whether cancer is present). Common areas that may be scanned include the head, neck, chest, abdomen, pelvis, or an extremity.

INFORMATION VALUE

Tumor detection, information on spread of disease as well as effectiveness of treatment is valuable information for your doctor in determining course of treatment.

CAUTION

Some people may be concerned about the amount of radiation they receive during a CT scan. It is true that the radiation exposure from a CT scan can be higher than from a regular x-ray. However, not having the procedure can be more risky than having it, especially if cancer is suspected. People considering CT must weigh the risks and benefits.
In very rare cases, contrast agents can cause allergic reactions. Some people experience mild itching or hives (small bumps on the skin). Symptoms of a more serious allergic reaction include shortness of breath and swelling of the throat or other parts of the body. People should tell the technologist immediately if they experience any of these symptoms, so they could be treated promptly.