中文摘要：

目的 评价实时三维超声心动图在机定量左室收缩功能技术与M型超声Teich法及二维超声simpson’s法对左室收缩功能的检测差异。方法 在三种超声方法心内膜边界显示清晰、完整时进行测量,完成55例正常受试者的左室收缩功能测算。结果 三种方法 EDV、ESV、SV及EF测值差异均有统计学意义（P〈0.05）;与实时三维超声心动图相比,二维超声心动图低估了EDV、ESV和SV值,高估了EF值;M型超声高估了EDV、ESV、EF和SV值;三种方法间EDV、ESV和SV测值相关性良好（P〈0.01）,M型和二维的EF测值相关性良好（P〈0.01）,实时三维与M型和二维的EF测值间均无相关性（P〉0.05）。结论 实时三维超声心动图在机定量检测左室收缩功能技术是一种准确、迅速、方便的左室收缩功能评估方法,可在临床推广应用。

英文摘要：

Objective To analyze the differences of real-time three-dimensional echocardiography （RT-3DE）, M-mode echocardiography and two-dimensional echocardiography （2DE） for left ventricular function assessment. Methods 55 subjects underwent RT3DE, M-mode echocardiography and 2DE Global LV end-diastolic volume （EDV）, LV end-systolic volume （ESV）, LV ejection fraction （EF）, and stroke volume （SV） were measured. Results EDV, ESV and SV by RT3DE were high- er than those by 2DE, but which were lower than those by M-mode echocardiography. However, EF by RT3DE was highest whereas lowest by 2DE. EDV, ESV or SV showed significant intraclass correlation for RT3DE, 2DE and M-mode echocardio- graphy. However, there was no significant correlation in EF between by RT3DE and by 2DE or M-mode echocardiography. Con- clusion Compared with RT3DE, 2DE significantly underestimated the EDV, ESV and SV, but overestimated EF. M-mode echocardiography significantly overestimated the entire four indexes.