MRPA, which medically refers to magnetic resonance pulmonary arteriography, is a relatively mature technique that can visualize all vascular beds except the coronary arteries and can be used as an alternative to CT-PA (pulmonary arteriography under CT). Because it does not require a non-ionized contrast agent, it is mostly used in patients with renal insufficiency or even renal failure and in patients who need continuous evaluation of their condition, such as postoperative follow-up. Magnetic resonance pulmonary angiography combined with dynamic imaging allows for the assessment of cardiac function and blood flow in the organism, and continuous dynamic imaging allows for the qualitative and quantitative evaluation of ventricular function. A number of studies have demonstrated that these results are usually accurate and reproducible, making MR pulmonary angiography clinically important in the determination of right and left ventricular function.