Adenosine Myocardial Perfusion Imaging Test
An Adenosine Myocardial Perfusion Imaging test uses a radioactive imaging agent (not a dye) to produce pictures of the heart muscle. The imaging agent gives off a small amount of radiation which can be seen with a special camera. The amount of radiation exposure during this test is very small and poses no health risk.
The test will help your doctor determine if there are areas of your heart that do not receive enough blood supply due to coronary artery disease. Areas of your heart that may have been damaged from a previous heart attack may also be seen.
Prior to the test, an IV will be started. During the rest portion of the test, you will receive an injection of the radioactive imaging agent, and pictures will be taken of your heart. For the stress portion of the test, a medication (Adenosine) will be given through the IV to simulate exercise by dilating the blood vessels of the heart. During the infusion, you will be continuously monitored for blood pressure, heart rate, rhythm, and ECG changes.
You will be given an injection of the radioactive imaging agent during the infusion. Following the Adenosine infusion, pictures will be taken to determine blood flow to the heart muscle.