应用二维斑点追踪技术评价正常人左室整体及节段收缩功能  

Application of two dimensional speckle tracking echocardiography in evaluation of left ventricular global and segmental systolic function

作　　者：李政[1] 潘翠珍[1] 舒先红[1] 

机构地区：[1]复旦大学附属中山医院超声心动图科,上海市心血管病研究所,上海市影像医学研究所,上海200032

出　　处：《中国临床医学》2017年第1期47-50,共4页Chinese Journal of Clinical Medicine

摘　　要：目的:应用二维斑点追踪技术评价正常人左室整体及节段收缩功能。方法:随机入组36例健康志愿者,应用Qlab 9.0分析软件分析左室各壁段、各水平和左室整体纵向(longitudinal strain,LS)/环向(circumferential strain,CS)应变值。导出Excel表格,经计算后获得左室基底水平旋转(basal rotation,BR)值、心尖水平旋转(apical rotation,AR)值、左室扭转(left ventricular torsion,LVT)值。结果:正常人室间隔与下壁CS值高于前壁、侧壁(P<0.008)。正常人基底水平LS值低于心尖水平与乳头肌水平(P<0.017),心尖水平CS值高于基底水平及乳头肌水平(P<0.01)。结论:室间隔处于心脏收缩的中心地位,下壁对室间隔及右室扭转及收缩有辅助作用,左室心肌收缩力自基底水平至心尖水平呈递增趋势。Objective：To investigate left ventricular global and segmental systolic function in normal subj ects by assessing left ventricular strain and rotation/torsion using two dimensional speckle tracking echocardiography.Methods：Totally 36 healthy volunteers were randomly recruited.Quantitative analysis was done using Qlab 9.0 software offline, longitudinal strain （LS）/circumferential strain （CS）of each wall and level were defined as the average of LS/CS of containing segments.After exporting Excel files and calculating,basal rotation （BR）,apical rotation （AR）,and left ventricular torsion （LVT）were obtained.Results：CS of interventricular septum and inferior wall were higher than that of anterior wall and lateral wall （P〈0.008）.Base level LS in normal case was lower than the LS of apical level and papillary muscle level （P〈0.017）.CS of apical level was higher than that of basal level and papillary muscle level （P〈0.01 ）.Conclusions：The interventricular septum is in the center of systole.The inferior wall may be an insistence to right ventricular torsion.Left ventricular systolic strength in normal subj ects increased from basal level to apical level.

关 键 词：二维斑点追踪 心功能 左 应变 旋转/扭转 

分 类 号：R445.1[医药卫生—影像医学与核医学]