Study on the noninvasive estimation of pulmonary vascular resistance by color M-mode echocardiography assisted with computer
- VernacularTitle:计算机辅助彩色M型超声心动图无创估测肺血管阻力的研究
- Author:
Yuqi ZHANG
;
Baoying YE
;
Kun SUN
;
Sun CHEN
;
Zhifang ZHANG
;
Rong SHEN
;
Lanping WU
;
Wei GAO
- Publication Type:Journal Article
- Keywords:
Echocardiography;
Pulmonary vascular resistance;
Pulmonary circulation;
Heart defects,congenital
- From:
Chinese Journal of Ultrasonography
2008;17(6):465-468
- CountryChina
- Language:Chinese
-
Abstract:
Objective To determine the feasibility and accuracy of velocity propagation within main pulmonary artery(VP)from color M-mode Doppler imaging using custom software on a personal computer for noninvasive estimation of PVR.Methods Color M-mode imaging of pulmonary flow was obtained and then transferred to computer,the velocity propagation of pulmonary flow was automatically obtained.Comparative studies among Doppler echocardiography,personal computer and cardiac catheterization for predicting PVR had been done in 20 children with congenital heart disease and 20 normal children.Results Velocity propagations of children with congenital heart disease were significant lower than those of normal children obtained by color Mmode echocardiography[(38.38±18.89)cm/s VS(80.34±15.65)cms,P＜0.01),and correlated well with invasive PVR measurements(r=-0.69,P＜0.01).The correlation and repeatability of VP obtained by the custom software were better than VP obtained by Doppler echocardiography(r=-0.78,P＜0.01).A VP cutoff value obtained by the custom software of 35.910 had a sensitivity of 92.9% and a specificity of 100% to within pulmonary artery obtained by color M-mode echocardiography using custom software on a personal computer.
