Acute myocardial infarction（AMI） is a serious cardiovascular disease threatening human life.Despite the rapid development of thrombolytic therapy

percutaneous coronary intervention and coronary artery bypass grafting in recent years

AMI is still one of the main causes of death and disability. Studies have shown that cardiac scar formation after myocardial infarction is an important risk factor for the occurrence of major adverse cardiovascular events（MACE）

which directly affects the long-term prognosis of patients. Therefore

for patients with AMI

it is particularly important to identify the degree of scar

evaluate the prognosis and take effective intervention measures to improve the prognosis of patients and reduce the occurrence of MACE.