缺血性心脏病(ischemic heart disease,IHD)是由冠状动脉血流量与心肌需求不平衡造成的,是一种常见且多发的心血管系统疾病。由于缺血发生的速度、程度、范围、持续时间、有无再灌注或侧枝循环的不同,缺血心肌中除了坏死心肌外,还有一部分“存活心肌”。不同于坏死心肌,存活心肌在恢复血流灌注后功能可逆,因此检测存活心肌具有十分重要的意义。目前,核素显像、超声、磁共振及心电图是检测存 Ischemic heart disease (IHD) is caused by the imbalance of coronary blood flow and myocardial demand, and is a common and frequent cardiovascular disease. Due to the speed, extent, range, duration of ischemia, whether there is reperfusion or collateral circulation, ischemic myocardium in addition to necrotic myocardium, there are still part of the “living myocardium.” Unlike necrotic myocardium, viable myocardium is reversible after restoration of blood flow perfusion, so detecting viable myocardium is of great importance. Currently, radionuclide imaging, ultrasound, magnetic resonance and electrocardiogram is the test deposit