Objective To investigate the characteristics of angiographically moderate coronary artery stenosis, and to determine how to choose appropriate treatment strategy using intravascular ultrasound (IVUS).
目的应用血管内超声（IVUS）观察冠状动脉造影中等程度冠状动脉狭窄的血管内超声特点，选择治疗决策。
Objective To investigate the characteristics of angiographically moderate coronary artery stenosis, and to determine how to choose appropriate treatment strategy using intravascular ultrasound (IVUS).
目的应用血管内超声（IVUS）观察冠状动脉造影中等程度冠状动脉狭窄的血管内超声特点，选择治疗决策。
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