1.Myocardial perfusion imaging: early diagnosis of coronary heart disease, myocardial infarction, myocarditis and cardiomyopathy. 2.Systemic bone imaging: diagnosis of bone metastasis cancer, primary bone tumor, femoral head necrosis, osteomyelitis, multiple myeloma, osteoporosis and monitoring of graft bone viability, etc. 3.Pulmonary ventilation: perfusion imaging: diagnosis of pulmonary embolism, bronchial asthma, slow obstructive pulmonary disease and assessment of pulmonary function, etc. 4.Thyroid imaging: diagnosis of hyperthyroidism, hypothyroidism, ectopic thyroid and differentiation of benign and malignant thyroid nodules 5.Renal dynamic imaging: evaluation of renal function, monitoring of transplanted kidney function and diagnosis of renal hypertension, etc. 6.Tumor imaging: qualitative diagnosis of lung cancer, thyroid cancer, liver cancer, breast cancer and other types of tumors. 7.Hepatobiliary imaging: congenital biliary atresia, differentiation of jaundice, diagnosis of cholecystitis. 8.Cardiac function test: quantitative examination of heart function. 9.Gastrointestinal hemorrhage imaging: to find the unknown site of gastrointestinal bleeding. 10.Parathyroid imaging: diagnosis of hyperparathyroidism.