随着冠脉介入治疗的迅速发展,要求对冠脉狭窄血流动力学指标进行定量分析。球囊扩张术后出现动脉粥样硬化斑块的撕裂,并伴有部分延及深层的膜组织分离。单纯的血管造影和形态学检查无法了解损伤血管处的血流动力学作用。因此人们对能直接测定冠脉血流受阻、心肌灌注、物质代谢和左心室功能以及冠脉介入治疗后其它情况的方法越来越感兴趣。 With the rapid development of coronary intervention, quantitative analysis of coronary artery stenosis hemodynamic parameters is required. Atherosclerosis plaque rupture after balloon dilatation, accompanied by partial extension of the deep membrane separation. Simple angiography and morphological examination can not understand the hemodynamic role of vascular injury. As a result, there is growing interest in methods that allow direct determination of blocked coronary flow, myocardial perfusion, substance metabolism and left ventricular function, as well as other post-PCI interventions.