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What is a CT scan?

A CT scan is a procedure in which the doctor examines your arteries in detail. The radiologist puts dye in the bloodstream and takes x-rays to help identify any problems.

When is it used?

This procedure may be done for the following reasons:

to look for blockage or narrowing of the artery.
to look for defects in the artery wall, such as an aneurysm (a weak spot).

The doctor may do an ultrasound first. An ultrasound is a safe, painless procedure in which sound waves are used to create a picture of the artery and its contents. In some cases, the results of the ultrasound eliminate the need to have a CT scan.

How do I prepare for this procedure?

Before the procedure, tell the doctor if you have had any kidney problems or reactions to iodine-containing substances, such as kidney contrast dye or seafood.

Follow the instructions provided by your doctor. Eat a light meal the night before the test. Do not eat anything after midnight on the day of the procedure, but drink extra water and a sport drink that morning, take your regular medicines except fluid pills (diuretics) and metformin (Glucophage), arthiritis medicine. You probably need premedication with Bicitra and mucomyst (Can be obtained online in easier to take capsule form at avmazon.com). Otherwise, see about a prescription for this. Do not take the metformin (Glucophage) for 2 more days after.