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单纯评价管腔狭窄程度诊断冠心病的冠状动脉CT血管成像技术容易受到多种因素干扰。临床上，进行血运重建的重要依据是存在冠状动脉管腔狭窄和节段性心肌缺血。虽然血流储备分数指导下的经皮冠状动脉介入治疗可改善患者预后，但有创且费用增加。血流储备分数 CT可评价功能相关血管，但实际临床价值有待证实。冠状动脉多层螺旋CT血管造影联合心肌灌注及心肌功能分析，有望能判断功能相关的血管病变，从而为临床治疗提供客观依据。“,”Relying only on the degree of stenosis to diagnose coronary heart disease with coronary CT angiography is susceptible to a variety of factors .The clinical revascularization is dominated by two important factors which are respectively coronary stenosis and segmental myocardium ischemia .Although FFR guiding the percutaneous coronary intervention can improve the prognosis ,it is invasive and has higher costs .CT-FFR can evaluate function-related vascular condition,but its actual clinical value remains to be confirmed.Multi-slice spiral CT angiography of coronary artery,combing myocardial perfusion and myocardium function analy-sis,is expected to determine the function-related coronary disease,and can provide an objective evidence for the clinical treatment.