Myocardial Perfusion Stress Study (formerly Stress Thallium or Cardiolite):

You have been scheduled for an Exercise Myocardial Perfusion Study, which involves the use of small amounts of radioactive materials. The level of radioactivity used is extremely low and will not make you feel any different.

Preparation for the procedure:
You cannot have any food or drink three hours before the test. You can have no products containing caffeine twenty four hours before the exam (ie. no decaf or regular coffee, no decaf or regular tea, cola, chocolate, anacin, excedrin, etc.). If you are taking beta blockers or calcium blockers please contact your physician. With your physician’s approval do not take beta blockers for forty eight hours and calcium channel blockers for twenty four hours prior to the exam. Wear or bring comfortable clothing and shoes as you will be asked to exercise on a treadmill. Please inform the technologist if you are pregnant or breast feeding. The imaging may be changed, or special instructions given based upon that information.

What to expect:
Once in the exam room an IV will be started in your arm and you will be injected with Thallium. Ten minutes later you will be positioned on your back and a camera with two or three special detectors will rotate around your heart. This scan will take approximately twenty minutes. You will then be prepped for an EKG and exercise on a treadmill with a doctor present. During peak exercise you will receive a compound called Cardiolite. There will be a fifteen to twenty minute wait and then you will return to the camera where a second set of pictures of your heart will be taken (approximately fifteen minutes). This entire procedure takes around two hours. In some cases a separate set of images twenty four hours later may be necessary.
Alternatively, there is another machine called a D-SPECT that has nine detectors on it. With this machine you sit in a chair and the machine rests near your left side and chest. With this machine the first scan takes about ten minutes, and the second scan takes about five minutes. The entire procedure takes around forty five minutes.

The imaged films will be reviewed and the results will be sent to your physician. Your physician will discuss these results with you and explain what they mean in relation to your health.

Your questions and comments:
call (805) 563-5870.

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