The purpose of imaging is to clarify the lesion, such as coronary CTA, which is done to clarify whether there is a stenosis in the blood vessels of the heart and to determine the next step of treatment according to the degree of stenosis. DSA is also done to clarify the lesion, such as cranial angiography, which is done to clarify whether there is aneurysm, smog or severe stenosis of the blood vessels in the skull, and can be treated according to the results of the test. If there is a clear aneurysm, interventional methods can be chosen for treatment according to the situation. In addition, aortography is performed to clarify whether there is any obvious entrapment or aortic aneurysm. The entrapment can look at the location and size of the rupture, and further surgical treatment can be performed according to the situation.