Cardiac nuclear imaging uses radioactive materials (tracers) to obtain diagnostic images of the heart and vessels. Testing involves giving a tiny amount of a tracer to a patient. The tracer collects in the heart and gives off gamma rays, which are detected by a gamma camera. Skilled nuclear medicine technologists perform the tests, which are interpreted by experienced Medical College of Wisconsin nuclear medicine physicians.The two main types of cardiac nuclear imaging tests are:
- Multiple Gated Acquisition (MUGA) — measures how much blood the heart pumps or “ejects” with each contraction (the ejection fraction) and how quickly that blood is ejected.
- Nuclear medicine stress test (also called myocardial perfusion imaging) — evaluates the coronary arteries by determining changes in blood flow to the heart during exercise.
Learn more about other heart and vascular diagnostic tests we offer.
Chicago Man Benefits From Minimally Invasive Heart Surgery
Dr. Robert Boxer had a history of heart problems, including a leaky heart valve. He traveled from the Chicago area to seek out the expertise of Dr. Michael Salinger, who repaired the valve. Dr. Boxer was home for dinner the following evening.
Inspired by Her Care, This Patient Became a Nurse
When Nicole collapsed from an undetected heart condition, our vascular surgeons had to amputate her legs because of her compromised blood flow. With the help of prosthetics, Nicole learned to walk again. Now, Nicole is a nurse at Froedtert Hospital.