CPT® Code 75574

Computed tomographic angiography, heart, coronary arteries and bypass grafts (when present), with contrast material, including 3D image postprocessing (including evaluation of cardiac structure and morphology, assessment of cardiac function, and evaluation of venous structures, if performed)

A computed tomography angiography (CTA) is a specialized imaging procedure designed to assess the heart, coronary arteries, and any bypass grafts that may be present. This procedure involves the use of contrast material, which is administered through an intravenous line to enhance the visibility of the blood vessels during imaging. Prior to the scan, patients are often given a nitroglycerin tablet to dissolve under the tongue; this medication works by dilating the blood vessels, thereby improving the clarity of the images obtained during the angiography. The CTA utilizes a CT scanner that emits multiple, narrow X-ray beams around a rotational axis, capturing a series of two-dimensional images of the heart from various angles. These initial images are then reviewed, and additional images may be taken if necessary to ensure comprehensive evaluation. Advanced computer software processes the collected data to create three-dimensional images of the heart, coronary arteries, bypass grafts, and any other relevant venous structures. The resulting thin, cross-sectional images, both in 2D and 3D formats, allow the physician to thoroughly evaluate the cardiac structure and morphology, assess cardiac function, and identify any potential issues such as plaque deposits, narrowing, or obstructions in the coronary arteries or bypass grafts. A detailed report summarizing the findings is subsequently dictated for further review and analysis.