Conclusion IVUS is superior to CAG on the diagnosis of unstable arteriosclerosis plaques.

结论：IVUS对冠心病冠状动脉粥样硬化不稳定斑块的诊断较CAG更具优势。

There is high percentage of cases with accurate position of stent in ostium confirmed by IVUS.

经过IVUS检查证实大部分支架在冠状动脉口部病变处能准确置入。

Mithods 5 patients with ACS accept CAG and IVUS. The IVUS were analyzed in combination with CAG.

方法对5例临床诊断冠心病而冠脉造影阴性的病人行血管内超声检查，结合造影结果综合分析。

Conclusion The IVUS can get real diagnosis for those patients with ACS or CHD whose CAG is negative.

结论血管内超声检查可以准确诊断冠脉造影阴性冠心患者的不稳定斑块。

Materials and Methods: IVUS and cardiac catheterization were undertaken in 12 children with CHD and PH.

材料和方法：对12例合并PH的先心病患儿行右心导管检查的同时进行肺动脉IVUS成像。