CT/CAT (Computerized Axial Tomography)

A CT/CAT (Computerized Axial Tomography) scan is a simple, non-invasive procedure that enables medical professionals to quickly and safely obtain sophisticated and accurate diagnostic information on your brain, chest, abdomen, pelvis, spine and extremities.

The first thing you will notice when you enter the CT scan examination room is the CT scan machine itself - a table surrounded by a large donut shaped cylinder. During the exam, you simply lie still on the table as a technologist slowly advances the table into the proper position. The cylinder will rotate slowly aorund the table, as thin x-ray beams take cross sectional "snapshots" of the area of the body being examined.

Don't be concerned if you hear clicking sounds as the cylinder rotates and the pictures are taken - that's simply the X-ray camera and the cylinder gears at work.

BEFORE THE EXAM:

If you are or could be PREGNANT or if you have asthma, you should tell your physician before having any type of CT scan. You should also let your physician know if you have ever had a reaction to a contrast agent or if you have any allergies to food, especially shellfish.

FREQUENTLY ASKED QUESTIONS:

1) How does a CT scan differ from a traditional X-ray?

CT scans can be up to 100 times more sensitive than conventional X-rays so radiologist can distinguish subtle differences in soft tissues that may not be detected with regular X-rays

2) Is the contrast agent or "dye" painful?

No, though some people feel a warm sensation as it enters the body. If you feel any discomfort during the exam or have had a reaction to a contrast agent before or if you are allergic to shellfish, you should inform the technologist or your physician.

3) Who performs the exam?

The procedure is done by a technologist and/or a radiologist both specially trained to conduct these types of tests.

4) Should I be concerned about the radiation associated with the X-rays being taken during the CT scan?

Not at all. CT scans require very low doses of radiation that are well within safe limits. You should also keep in mind that the value of the information gathered during a CT scan far outweighs any risk.