冠脉造影作为诊断冠心病的金标准，并不能探查冠状动脉微循环的病变情况。
Coronary angiography (CAG) is the gold standard in diagnosing CHD, which can not detect microcirculatory pathological changes of coronary artery.
结论冠状动脉支架置入术可改善缺血心肌血流灌注，实时心肌超声造影可评价心肌微循环灌注。
Conclusion Intracoronary stent implantation can significantly improve the blood supply of the ischemia myocardium. RTMCE can estimate the perfusion of microcirculation.
结果：有肾微循环障碍组冠状动脉狭窄率较非肾微循环障碍组高，且双支、多支病变更严重。
Results: the rate of coronary artery stenosis of the former group is higher than that in latter group, and double-branch, multi-vessel disease was more serious.
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