实时三维超声心动图对房间隔缺损患者右心室收缩功能的评价

目的：应用实时三维超声心动图（Real-time three-dimensional echocardiography，RT-3DE）评价房间隔缺损患者右心室收缩功能。方法：将18例房间隔缺损（ASD）患者与22例正常人（NOR组）进行比较。使用RT-3DE采集心脏全容积图像，应用4D RV-Function 1.1软件分析，得出右心室整体和三节段各自的舒张末期容积（EDV）、收缩末期容积（ESV），射血分数（EF）。结果：ASD患者的右室整体及节段EDV、ESV均较正常人增高，右室整体及节段的EF均较正常人下降（P<0.05）；同时得出ASD组的三节段间收缩趋势也不同于NOR组。结论：RT-3DE可以准确的评价ASD患者的右室整体和节段功能改变，而且可以同步分析节段间的差别，是评估右心室功能的优越技术。

Evaluation of right ventricular systolic function in patients with atrial septal defect using real-time three-dimensional echocardiography

Objective: To evaluate RV systolic function in patients with atrial septal defect(ASD) using real-time three-di-mensional echocardiography (RT-3DE). Methods: Eighteen patients with ASD and twenty-two normal persons were studied by acquiring full volume images on RT-3DE, then were analysed by software (4D RV-Function 1.1). End-diastolic volume(EDV), end-systolic volume (ESV), ejection fraction (EF) of the global right ventricle and the regional volume and EF of the segments were acquired. Results: EDV and ESV of global and regional right ventricle increased in ASD patients, global and regional right ventricle EF were decreased in ASD patients(P<0.05). Meanwhile the systolic tendency of right ventricle in ASD patients was differed from the normal persons. Conclusion: The RT-3DE is a precise technology not only in evaluation of global and regional right ventricular systolic function but also in discrimination of segmental function simultaneously.