Nuclear imaging testing allows your doctor to check the blood supply to your heart and see how well your heart works. The images that are produced help to identify coronary heart disease, the severity of previous heart attacks and risk of future heart attacks. Nuclear testing produces highly accurate measurements of heart size, function and heart muscle damage. This test may be used to help guide treatment for certain heart conditions.
You may be required to abstain from eating, drinking or smoking for a few hours before testing. Abstain from consuming any caffeinated products for 24 hours prior to the test. Plan on wearing comfortable clothes and shoes. Talk to your provider if you have any questions about this test.
The tests usually involve injecting a small amount of radioactive material into a vein and then tracing it through your bloodstream to your heart muscle. A special camera that can see the tracer is then used to take pictures of your heart. The test measures blood flow to the heart while it is at rest and also while your heart is working harder (due to exertion or medication).
If you have any questions about this test, talk to your cardiologist.