HCPCS 78451

Myocardial perfusion imaging, tomographic (SPECT) (including attenuation correction, qualitative or quantitative wall motion, ejection fraction by first pass or gated technique, additional quantitation, when performed); single study, at rest or stress (exercise or pharmacologic)

AI EXPLANATION: A myocardial perfusion scan is a specialized nuclear imaging test that evaluates blood flow to the heart muscle. A small amount of a safe radioactive tracer is delivered into the bloodstream, allowing a special tomographic camera to capture cross-sectional pictures of the heart. The scan reveals how well blood reaches different areas of the heart muscle and assesses heart wall movement and pumping function, performed either while the heart is resting or under physical or medication-induced stress.