CPT® Code 78433

Myocardial imaging, positron emission tomography (PET), combined perfusion with metabolic evaluation study (including ventricular wall motion[s] and/or ejection fraction[s], when performed), dual radiotracer (eg, myocardial viability); with concurrently acquired computed tomography transmission scan

The CPT® Code 78433 refers to a myocardial imaging procedure utilizing positron emission tomography (PET) that combines perfusion and metabolic evaluation studies. This non-invasive imaging technique is designed to assess the heart muscle's functionality, including its pumping ability, blood flow, and overall perfusion. The procedure employs radioactive tracers, which are injected into the patient's bloodstream, allowing for the creation of detailed three-dimensional images that illustrate blood flow dynamics within the heart during its activity. Additionally, the PET scan is capable of detecting biochemical changes at the cellular level, which can indicate the early stages of disease processes or assess myocardial viability before any anatomical alterations in the heart tissue become evident. The study specifically focuses on two critical measurements of left ventricular function: ventricular wall motion and ejection fraction. These metrics are essential for predicting patient outcomes in the context of existing cardiac diseases. The procedure involves the use of dual radiotracers, such as rubidium-82 and nitrogen-13 for perfusion assessment, alongside carbon-11 for evaluating metabolic activity. The imaging is conducted in a specialized environment equipped with a gamma ray detecting scanner that encircles the patient's body, ensuring comprehensive imaging from multiple angles. The concurrent acquisition of computed tomography (CT) transmission scans enhances the precision of anatomical localization, allowing for improved identification of damaged tissues or disease processes by correcting for soft tissue attenuation with a CT map.