A MUGA scan, which stands for “multiple gated acquisition,” is a nuclear-medicine test that allows your doctor to see if your heart is beating properly.
In a MUGA scan, a radioactive substance called Technetium 99 is is injected into the bloodstream. This substance attaches to red blood cells, and it can be viewed through the body using a special camera that ultimately produces a moving image of the beating heart.
A MUGA scan allows your doctor to measure how much blood is pumped by the heart with each heart beat. This measurement, called the left ventricular ejection fraction (LVEF) is a good measurement of overall heart function.
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