PET stands for Positron Emission Tomography, which uses higher energy isotopes to achieve a better image of the heart than the standard nuclear camera. The isotope used during the scan is called Rubidium or RB-82. It has a half-life of 76 seconds so it is possible to give a larger dose than is possible using Thallium. The PET scan collects data to determine the blood profusion of the muscle to establish the amount of blockage, as well as ejection fraction. Although PET scanners have been used for brain studies and oncology, it is fairly new to the field of cardiology.

What is involved in the test?

This test will take about an hour. When you first come into the testing room, you will change into a gown, a blood pressure cuff will be placed around your arm and EKG leads will be applied to your chest. A technician will also prepare you for an IV. You will lie down on a table and have a series of camera images taken while you remain as still as possible.

What is the IV for and what is in it?

During the stress procedure of the test, you will be given a medication which will simulate exercise. The two types of medication used are Adenosine and Dipyridamole. Some people experience symptoms from the medication. Common symptoms are shortness of breath, tightness in the chest, flushing of the face, nausea, and heart rate elevation.

Do I need a referral from my doctor?

This test requires that you have a referral from your cardiologist or from your primary care physician.

When will I have the results?

If the test is normal, you will have the results within four to five working days. If a problem is found, you will be notified immediately.