A MUGA scan, also known as a multigated acquisition scan, is a type of medical imaging test used to evaluate the functioning and health of the heart. This diagnostic procedure provides detailed images of the heart's chambers, valves, and blood vessels to assess its overall performance and detect any abnormalities.
During a MUGA scan, a small amount of radioactive material, usually a radioactive tracer called technetium-99m, is injected into the patient's bloodstream. This tracer attaches to red blood cells and emits gamma rays, which can be detected by a special camera called a gamma camera. The gamma camera captures multiple images of the heart from different angles as it beats, creating a series of synchronized images known as a gated sequence.
The MUGA scan is particularly useful in measuring the heart's ejection fraction, which represents the percentage of blood pumped out of the heart with each contraction. It can also identify any abnormalities such as valve disorders, blood clots, or impaired pumping function. The results of a MUGA scan can help doctors diagnose and monitor conditions such as heart failure, cardiomyopathy, congenital heart defects, and coronary artery disease.
The procedure is generally safe and non-invasive, with low radiation exposure. However, it may not be recommended for pregnant women or individuals with certain medical conditions. MUGA scans are performed in specialized imaging centers or hospitals under the supervision of trained healthcare professionals, typically cardiologists or radiologists.
