Research in deformation and motion of interventricular septum by velocity vector imaging combining with radius of curvature and length of arc

VernacularTitle:曲率半径、弧长法与速度向量成像联合评价室间隔形变运动
Author: Xianghong LUO ; Tiesheng CAO ; Zuojun WANG ; Yunyou DUAN ; Zhaojun LI
Publication Type:Journal Article
Keywords: Echocardiography; Interventricular septum; Radius of curvature; Length of arc
From: Chinese Journal of Ultrasonography 2009;18(3):219-221
CountryChina
Language:Chinese
Abstract: Objective Radius of curvature (RC) and velocity vector imaging (VVI) were joined to evaluate the deformation and motion of interventricular septum(IVS). Methods VVI was performed in fifteen healthy volunteers and obtained dynamic images at chordae tendineae of mitral valve in short axis view. The images were stored and analyzed to obtain circumferential peak stain of IVS. In the same short axis view, the static images were captured at end-systole and end-diastole respectively before they were analyzed by self-made software. The length of arc and RC were measured automatically by the software, so the shortening rates of them could were calculated. Results The length of arc and RC were longer at end-diastole than those at end-systole(P<0.0001). The shortening rate of length of arc was compared with circumferential peak stain of IVS (P=0.123) and they were correlation (r = 0. 840, P = 0. 0001 ). Blant-Altman analysis indicated that the concordance was well. Conclusions The length of arc and RC can evaluate the deformation and motion of IVS.