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Computed Tomography (CT) Scan of the Body - Why It Is Done
About this test
CT scans are used to study areas of the body and the arms or legs.
- Chest (thorax). A CT scan of the chest can look for problems with the lungs, heart, esophagus, the major blood vessel (aorta), or the tissues in the center of the chest. Some common chest problems a CT scan may find include infection, lung cancer, a pulmonary embolism, and an aneurysm. It also can be used to see if cancer has spread into the chest from another area of the body.
- Abdomen. A CT scan of the abdomen can find cysts, abscesses, infection, tumors, an aneurysm, enlarged lymph nodes, foreign objects, bleeding in the belly, diverticulitis, inflammatory bowel disease, and appendicitis.
- Urinary tract. A CT scan of the kidneys,
ureters, and bladder is called a CT KUB or CT urogram.
This type of scan can find
kidney stones, bladder stones, or blockage of the
urinary tract. See a picture of a
CT of diseased kidneys
. A special type of CT scan, called a CT intravenous
pyelogram (IVP), uses injected dye (contrast material) to look for kidney stones, blockage, growths, infection, or
other diseases of the urinary tract. - Liver. A CT scan can find liver tumors, bleeding from the liver, and liver diseases. A CT scan of the liver can help determine the cause of jaundice.
- Pancreas. A CT scan can find a tumor in the pancreas or inflammation of the pancreas (pancreatitis).
- Gallbladder and bile ducts. A CT scan can be used to check for blockage of the bile ducts. Gallstones occasionally show up on a CT scan. But other tests, such as ultrasound, usually are used to find problems with the gallbladder and bile ducts.
- Adrenal glands. A CT scan can find tumors or enlarged adrenal glands.
- Spleen. A CT scan can be used to check for an injury to the spleen or the size of the spleen.
- Pelvis. A CT scan can look for problems of organs in the pelvis. For a woman, these include the uterus, ovaries, and fallopian tubes. For a man, the pelvic organs include the prostate gland and the seminal vesicles.
- Arm or leg. A CT scan can look for problems of the arms or legs, including the shoulder, elbow, wrist, hand, hip, knee, ankle, or foot.
Other uses for a CT scan
A CT scan may be used to make sure a procedure is done correctly. For example, the doctor may use CT to guide a needle during a tissue biopsy or to guide the proper placement of a needle to drain an abscess.
For people with cancer, a CT scan can help determine how much the cancer has spread. This is called staging the cancer.
| By: | Healthwise Staff | Last Revised: May 12, 2010 |
| Medical Review: | Adam Husney, MD - Family Medicine Howard Schaff, MD - Diagnostic Radiology | |
© 1995-2011 Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated. 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 Terms of Use. How this information was developed to help you make better health decisions.
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