Accuracy in measuring ventricular volume: comparison of two methods of volume data ofreal-time three-dimensional echocardiography
DENG Bin-hua1, XIE Ming-xing2, WANG Xin-fang2, ZHOU Yang-yang2
1.Department of Ultrasonography, the First People’s Hospital of Chenzhou, Chenzhou Hunan 423000, China;2.Union Hospital of Tongji Medical College of Huazhong University of Science and Technology, Wuhan 430022, China
Abstract：Objective: To compare the accuracy of measuring the ventricular volume between long-axis plane method and short-axis plane method in real-time three-dimensional echocardiography(VD-RT3DE). Methods: RT3DE was performed in 17 healthy individuals and 24 patients with left ventricular remodeling. Left ventricular end-diastolic volume(LVEDV) and right ventricular end-diastolic volume(RVEDV) were measured off-line by volume-analyzing software long-axis plane method and short-axis plane method and the time of endocardial boundary tracing was calculated as well. LVEDV and RVEDV were compared with values of multi-slice computed tomography(MSCT) respectively. Results: ①Values of LVEDV and RVEDV by long-axis plane method and short-axis plane method both had good correlation with MSCT(P＜0.05). ②The correlations between values of long-axis plane method and MSCT in measuring LVEDV were slightly higher than that of short-axis plane method. In normal group, correlation values of long-axis plane method and short-axis plane method were 0.975, and 0.960 respectively; the correlation values in left ventricular remodeling group were 0.925, and 0.904 respectively. ③The correlations between the values of long-axis plane method and MSCT in measuring RVEDV were apparently higher than that of short-axis plane method. In normal group, correlation values of long-axis plane method and short-axis plane method were 0.933, and 0.797 respectively; in left ventricular remodeling group, the correlation values of long-axis plane method and short-axis plane method were 0.908, and 0.753 respectively. ④The ventricular volume by the same method in left ventricular remodeling group were higher than that of normal group(P＜0.001), the correlations in left ventricular remodeling group were lower than that of normal group. ⑤The time of endocardial boundary tracing by long-axis plane method was shorter than that of short-axis plane method and there was extremely significant difference between the two methods(P＜0.001). Conclusions: RT3DE long-axis plane method can more effectively and accurately measure ventricular volume, which especially has more advantages than short-axis plane method in measuring right ventricular volume.
2010, Vol. 21 
