HCPCS 78491

Myocardial imaging, positron emission tomography (PET), perfusion study (including ventricular wall motion[s] and/or ejection fraction[s], when performed); single study, at rest or stress (exercise or pharmacologic)

AI EXPLANATION: A myocardial PET perfusion scan is an advanced imaging test that evaluates blood flow to the heart muscle. Using a specialized camera and a small amount of a radioactive tracer, the scan creates detailed cross-sectional pictures showing how well oxygen-rich blood reaches different areas of the heart. The test can be performed while resting or under physical or medication-induced stress to assess heart muscle function and pumping efficiency.