CPT® Code 78496

Add-On Code

Cardiac blood pool imaging, gated equilibrium, single study, at rest, with right ventricular ejection fraction by first pass technique (List separately in addition to code for primary procedure)

Cardiac blood pool imaging, specifically using the gated equilibrium technique, is a diagnostic procedure that evaluates the function of the heart, particularly focusing on the right ventricle. This imaging technique employs scintigraphy, which involves the use of a radiolabeled isotope tracer to visualize blood flow and cardiac function. The procedure is conducted while the patient is at rest, allowing for a stable assessment of cardiac performance without the influence of physical exertion. A key measurement obtained during this imaging is the right ventricular ejection fraction (RVEF), which quantifies the percentage of blood that is ejected from the right ventricle with each heartbeat. This is crucial for diagnosing various cardiac conditions. During the procedure, the patient is positioned on an imaging table, and electrodes are placed on the chest to continuously monitor the heart's electrical activity through an electrocardiogram (ECG). The gamma camera, which detects the radiation emitted by the radiolabeled tracer, is strategically positioned over the chest to capture images of the heart. The ECG is synchronized with the camera to ensure that images are taken at precise moments in the cardiac cycle, enhancing the clarity and resolution of the images obtained. The radiolabeled isotope tracer is injected intravenously, allowing it to circulate through the heart. The gated equilibrium technique records images based on the electrical signals from the ECG, capturing data at specific phases of the cardiac cycle, such as during the diastolic phase when the heart is relaxed. This method results in high-resolution images that provide valuable insights into the heart's function. The RVEF is calculated using the images obtained during the first pass of the tracer through the heart, allowing for an accurate assessment of right ventricular performance. Following the imaging, the physician interprets the results and generates a comprehensive written report detailing the findings of the study.