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  Nuclear Cardiology Testing FAQ's

Is the radioactive isotope dangerous?

The isotope that you are given will be the smallest dose possible given your body size. The amount of radiation that you are exposed to is comparable to an X-ray evaluation. Once the isotope is injected, it begins to lose strength and your body excretes any remaining radioactivity over the next 24-72 hours.


Why do I need to bring a snack?

The snack serves 2 purposes. Firstly, you have been fasting for the test and we want you to eat so that you are able to maintain your energy level. Secondly, by eating a snack and drinking water, we are able to clear the tracer isotope from your gastrointestinal tract, giving us better pictures and you, a more accurate result.


Can I have water while I am fasting before the test?

Yes, you may drink water before the test.


Can I drink tea before the test?

We ask that you refrain from drinking tea before the test as many teas contain caffeine and will negatively effect the test results.


How long will I be there?

For most tests you can plan on being with us for about 3 hours.


What should I wear?

We ask that you wear a comfortable, 2 piece outfit with tennis shoes.


Are there any side effects from the tests or isotopes?

You may feel fatigued after the test as a result of either exercising or pharmacologically stressing your heart. There are no long term or side effects from any of the medications or isotopes that you will be given.


Why did my doctor order this test? What will it show?

Nuclear cardiology procedures are designed to show blood flow to the heart. By combining the information from the EKG tracing with any symptoms you describe and the nuclear images, your physician will be able to determine if certain areas of your heart are not receiving enough blood supply or if they have been damaged due to a heart attack or other disease process. This data will allow you and your physician to make informed choices regarding your future course of care.