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ROPER ST. FRANCIS HEALTHCARE Nuclear Medicine MUGA Scan WHAT IS A MUGA SCAN? WHEN IS A MUGA SCAN MORE The Multiple Gated Acquisition scan (MUGA) is a noninvasive tool that creates a moving image of the beating heart. It is used for assessing the health of the cardiac ventricles (the heart’s major pumping chambers). USEFUL THAN OTHER HEART TESTS? HOW IS A MUGA SCAN PERFORMED? A MUGA scan is performed by starting an IV and drawing out a small amount of blood. The blood is tagged with a radiotracer and then injected back into the bloodstream. Once the blood is tagged, EKG leads are placed on the patient’s chest to track heart muscle contractions. The patient is then placed under a special gamma camera that is able to detect the low-level radiation being given off by the red blood cells. When the tagged red blood cells fill the heart’s chambers the gamma camera is able to capture their images creating an outline of the heart. The final product is a movie of the heart beating. The scan takes approximately one hour. WHAT CAN BE LEARNED FROM A MUGA SCAN? There are several advantages to a MUGA scan over other techniques, such as the echocardiogram. The MUGA scan provides results that are very accurate. Compared to other heart tests, these results are also highly reproducible, meaning if the test is repeated several times, nearly the same answer is always obtained. Along with the noninvasive nature of the test, these advantages make the MUGA scan ideal for detecting subtle changes in cardiac function that could be missed with other techniques. A common clinical situation in which repeated MUGA scans are useful is in following a patient’s cardiac function during the delivery of chemotherapy for cancer. Some chemo-therapeutic agents can be quite toxic to the heart muscle. By measuring the MUGA results periodically during chemotherapy, oncologists can determine whether it is safe to continue with the therapy, or whether certain medications need to be stopped. To Schedule a MUGA Scan, call 402-5000. Several important features of heart function can be measured from the MUGA scan. If a patient has had a heart attack, or other heart disease, the MUGA scan can localize the portion of the heart muscle that has sustained damage, and assess the degree of damage. Most importantly, the MUGA scan creates an accurate report of how well the heart is pumping blood. www.rsfh.com