Radionuclide ventriculography (RVG, RNV) or radionuclide angiography (RNA) is a type of nuclear imaging test that allows doctors to study the heart's chambers in motion. This test can tell doctors how well the heart pumps and how much blood it pumps with each heartbeat during exercise and at rest. An RVG can help doctors learn more about why a patient may be experiencing chest pain, trouble breathing, dizziness or tiredness.
During this test, a doctor will inject a radioactive tracer into an arm vein to "tag" and track blood cells progress through the heart. A camera records the heart muscle at work. A doctor can match these recordings with the electrocardiogram (ECG), a recording of the heart's electrical activity.
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