Myocardial Perfusion Study with Adenosine

You have been scheduled for an Adenosine 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. The Adenosine is a chemical that your body produces when you exercise. It is used to dialate the arteries in your body in place of exercising.

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.). You may continue any medication which has been prescribed for you. If you take Theophylline or Persantine please notify the technologist. 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. Adenosine will be infused through the IV (approximately five minutes). You may feel slightly flushed or have a headache but these feelings will pass very quickly. During the infusion you will receive a compound called Cardiolite. Once the Cardiolite is given you will be asked to wait for fifteen minutes. You will return to the camera and have a second twenty minute scan performed. 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 images 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.

Back to list