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What is a CT scan?

A CT scan, also know as a cat scan (computerized axial tomography) is a diagnostic test that combines the use of X-rays and computer technology. X-ray beams are obtained from different angles. These X-ray images are then put together in the computer to create a detailed picture of bones, organs and tissue.
 
What should I do before the exam?
The technologist will take you to a private dressing room where you will change into a gown. Depending on your test, you may be asked to drink a contrast solution. Contrast is a liquid that improves the visibility of structures within the body. Some tests require an IV contrast agent, while others require a combination of both IV and oral contrast. If IV contrast is needed, you will be asked to sign a consent form.
 
What should I expect during the exam?
You will be asked to lay down on the X-ray table. The CT scanner has a large opening in it. The table will be slowly moved into the large opening as a series of pictures are taken. You may be given an injection of IV dye which enhances blood vessels and surrounding organs. The study lasts approximately one hour.
 
When will I get results?
In most cases, you won't get your results the day of the exam. Your doctor will receive a written report within 3 to 5 working days. Your doctor may request an oral report if needed for more immediate reasons.
 
Tips for your exam

  • Arrive at least 15 minutes before your scheduled appointment.
  • Wear comfortable clothes with no metal closures (cotton sweatsuit, sports bra).
  • Don't eat 4 hours prior to your procedure if you are having a CT scan of your abdomen.
  • Remain still during the exam, please. This will help keep the exam time short and keep from possibly having to repeat the study.

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October 7, 2008