目的:探讨血管内超声(IVUS)在冠心病介入诊疗应用中的临床价值。方法:36例确诊为冠心病的病人,其中男性28例,女性8例,采用先冠脉造影(CAG)然后行IVUS检查,PCI术后再次行IVUS,比较两者及PCI前后IVUS结果的差异。结果:与IVUS相比较,CAG不能很好判断临界病变、软斑块及纤维斑块,但在钙化斑块、自发性夹层及血栓方面有较高特异性;IVUS可及时发现PCI术后支架贴壁不良及支架膨胀不全等。结论:IVUS可精确判断CAG难以发现的冠脉病变并可指导PCI治疗,应予推广。 Objective: To investigate the clinical value of intravascular ultrasound (IVUS) in the diagnosis and treatment of coronary heart disease. Methods: Thirty-six patients with coronary heart disease were diagnosed as coronary heart disease, including 28 males and 8 females. The patients underwent coronary angiography (CAG) before IVUS. The patients underwent IVUS again after PCI. The differences between IVUS and before and after PCI were compared . Results: Compared with IVUS, CAG could not judge the critical lesion, soft plaque and fibrous plaque well, but had higher specificity in calcified plaque, spontaneous dissection and thrombosis. IVUS could detect the stent after PCI Poor wall and stent expansion incomplete. Conclusion: IVUS can accurately determine the CAG difficult to detect coronary lesions and can guide the PCI treatment should be promoted.