正常人左室功能的实时三平面超声心动图评价

目的　探讨实时三平面超声心动图（RT-3PE）测量正常人左室功能的准确性与可行性。方法　应用RT-3PE测量36例正常人的左室每搏量（LVSV），并分别与M型Teiehholz法、二维超声心动图Simpson法、多普勒主动脉瓣环血流量法所测的LVSV进行比较。结果 RT-3PE与M型Teichholz法、二维超声心动图Simpson法、多普勒主动脉瓣环血流量法所测的LVSV不仅具有较好的相关性（r=0．774，0．932，0．786，P〈0．01），并且上述4种方法所测LVSV之间无显著性差异（P〉0．05）。结论 实时三平面超声心动图能够准确地测量左室每搏量，为临床上快速、简便地评价左室功能提供了一种新方法。

Real-time tri-plane echocardiography for evaluating left ventricular function

Objective To evaluate the accuracy and feasibility of real-time tri-plane echocardiography(RT-3PE) in measurement of left ventricular function.Methods Left ventricular stroke volume (LVSV) in 36 healthy volunteers were measured by RT-3PE, M-mode Teichholz, two-dimensional echocardiography (2DE) simpson method and the product of aortic flow Doppler spectrum integral and aortic valvular area. Left ventricular stroke volume measured by RT-3PE was compared with every measurement of three traditional methods.Results These results from RT-3PE had good correlation with M-mode, 2DE and Doppler methods (r=0.765,0.890,0.804,P<0.01).Furthermore,there was no statistically significant difference among RT-3PE and three traditional methods for LVSV.Conclusion RT-3PE can accurately estimate LVSV and provide a new way for rapid, simple evaluation of left ventricular function in clinical study.