CPT® Code 73225

Magnetic resonance angiography (MRA) is a specialized imaging technique that focuses on the upper extremities, specifically the upper or lower arm, to assess the condition of arterial and venous vessels. This noninvasive procedure can be performed with or without the administration of contrast material, which may enhance the visibility of blood vessels during imaging. MRA utilizes a powerful magnetic field combined with pulses of radiowave energy to generate detailed images of the blood vessels, allowing for the evaluation of various vascular conditions. These conditions may include atherosclerotic stenosis, which is the narrowing of arteries due to plaque buildup; arterial dissection, where the inner layer of an artery tears; acute thrombosis, the formation of a blood clot; aneurysms or pseudo-aneurysms, which are abnormal bulges in blood vessels; vascular loops, and vascular malformations or tumors. The imaging process involves obtaining multiple images, typically 1-2 mm in thickness, which are then processed using advanced algorithms to create maximum intensity projections (MIPs). These MIPs serve a similar purpose to subtraction angiograms, allowing for clearer visualization of areas of interest. A radiologist reviews the MIPs alongside the initial MRA images, identifying specific areas that require further examination. The final interpretation of the findings is documented in a written report by the radiologist, providing essential information for clinical decision-making.