1.Blood, urine and fecal routine. 2.Leave and clotting time, prothrombin time and activity. 3.Blood cholesterol, triglyceride, blood K+, Na+ , cl-, blood glucose, blood urea nitrogen, blood creatinine, blood glutamate transaminase, hepatitis B surface antigen, immunological examination. 4.Electrocardiogram and X-ray cardiography. 5.Second-step, bicycle or flat exercise test. 6.Echocardiography. 7.Iodine allergy test. 8.Other related tests as necessary.