multigated acquisition scan


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Related to multigated acquisition scan: radionuclide angiography

multigated acquisition scan

Abbreviation: MUGA
A nuclear medicine scan for measuring the ejection fraction. The MUGA is performed by withdrawing a small amount of blood from the patient; the blood cells are incubated with a radioactive tracer, such as technetium or sestamibi, and then reinfused into the patient. A radioactive detector measures the quantity of blood in the heart at each of multiple stages in systole and diastole. Data obtained from the study are used to calculate the average expulsion of blood during each heartbeat.
Synonym: multigated ventriculogram; nuclear ventriculogram; radionuclide ventriculogram
See also: scan
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