Comparison of single-plane and biplane area-length methods for right ventricular volume calculation
- VernacularTitle:单平面及双平面面积-长度法计算右心室容积的比较
- Author:
Wei CUI
;
Jizeng ZHANG
;
Ruping DAI
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Stroke volume
- From:
Chinese Journal of Ultrasonography
2003;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the relative accuracy of single-plane and biplane area-length methods for determining right ventricular (RV) volume and ejection fraction (RVEF) both in vitro and in vivo studies. Methods The in vitro study consisted of 15 human right ventricular casts and the in vivo study consisted of 45 patients. RV volume by single-plane area-length method was determined by the product of RV area from apical four-chamber view and the distance from RV apex to tricuspid annulus. RV volume by biplane area-length method was defined as 2/3?(the product of RV area from apical four-chamber view and the distance from pulmonary valve to tricuspid valve). The actual volume of RV casts was determined by water displacement method. RV angiography was used to determine RV volumes and RVEF in the in vivo study. Results RV volumes calculated from both single-plane and biplane methods correlated closely with RV cast volumes in the in vitro study (r= 0.87- and 0.91-, respectively; both P 0.05-), but RV volume determined by single-plane method significantly overestimated angiographic volume (P
