If arteriosclerosis is in the early stages, we need to understand the situation with lipids and blood sugar, so lipid and blood glucose tests should be done. Later on, when some atheromatous plaques appear, examinations such as color Doppler ultrasound and cardiac echocardiography can be done to assess blood flow and the degree of narrowing in the vessels. For some severe narrowings, consider conducting a CTA, MRI, or angiography, which can non-invasively understand the lesions of arteriosclerosis. For some patients, if there is a need for interventional treatment, invasive, selective arterial angiography can be performed to understand the condition of the lesions. Therefore, different tests can be chosen at different stages.