Cardiac enhancement CT is often referred to as coronary CT, which is a non-invasive test. This test is performed by injecting a contrast agent into the peripheral blood vessels, and after the CT scan is synthesized by computer, the images can be reconstructed in multiple directions to observe the specific structures of the heart so that the coronary arteries can be visualized to determine the site of coronary artery stenosis, the degree of stenosis, and the presence of calcification. It is suitable for patients who are undergoing a health checkup or for patients with suspected heart disease. Cardiac angiography is often referred to as coronary angiography, which is an invasive test. It is the equivalent of a dynamic X-ray examination, in which a guidewire or catheter is inserted through the femoral or radial artery into the heart vessels to inject contrast. It allows dynamic scanning to observe the overlapping structures of the heart as a whole and to see the specifics of the heart by switching the patient’s perspective. The site, degree of coronary artery stenosis and blood supply can be clearly detected, which is a gold standard for the diagnosis of coronary heart disease. It is suitable for patients who have high suspicion of coronary artery disease, coronary intervention or need to clarify the coronary artery condition before surgery, so the choice of these two tests depends on the needs of the condition. If it is a patient with acute heart attack and there is a need for stenting it is recommended to do cardiography directly so that the stent can be placed directly if necessary. If you just want to see the general condition of the heart vessels, you can choose to have a coronary CT.