What Is Cardiac Perfusion? Understanding Heart Blood Flow Cardiac perfusion refers to the process of delivering oxygen-rich blood to the heart muscle (myocardium). This process is essential for the heart to function properly, as it supplies the heart tissue with the oxygen and nutrients needed to pump blood efficiently to the rest of the body. Without adequate perfusion, heart tiss... https://cardiperf.com/myocardial-perfusion-scan-mps-thallium-stress-test/