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A resting and exercise radionuclide angiogram (RNA) is a type of nuclear medicine test. A tiny amount of radioactive substance is used to help show the heart's chambers in motion. This test can show how well the heart pumps with each heartbeat and how much blood is pumped with each heartbeat, during exercise and at rest.

Learn about the 3 types of radiosurgery. This treatment uses focused beams of radiation to treat cancer tissues without making a surgical cut (incision). It's called surgery because it creates a result similar to an actual surgical procedure.