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实时三维超声心动图评价儿童左室心肌收缩位移的应用研究

徐兆峰,齐悦,张宏艳,贡欣,常亚彬   

  1. 天津市儿童医院
  • 收稿日期:2010-06-25 修回日期:2010-12-31 出版日期:2011-05-15 发布日期:2011-05-15
  • 通讯作者: 徐兆峰

Real-Time three-dimensional echocardiographic assessment of left ventricular regional systolic excursion in children

  • Received:2010-06-25 Revised:2010-12-31 Published:2011-05-15 Online:2011-05-15
  • Contact: feng zhao xu

摘要: 目的:探讨实时三维超声心动图在评价儿童左室各节段心肌室壁运动位移中的应用价值。方法:应用Philips IE33 型超声诊断仪,X7-2实时三维矩阵探头,检测55例正常儿童及10例扩张型心肌病儿童。对获得的三维数据采用Qlab软件进行脱机分析,获得左室各节段心肌的最大收缩位移值,以及室壁收缩位移占舒张末期室壁到左室重心距离的百分比,即圆心位移值。结果:正常对照组中,各节段心肌位移值及圆心位移值接近正态分布;各节段心肌位移值及圆心位移值性别间比较差异无统计学意义;各节段心肌位移值随年龄增长而升高,圆心位移值随年龄增长而降低;心尖段位移平均值小于基底段位和中间段位移平均值;基底段圆心位移值平均值大于中间段和心尖段圆心位移值平均值。室间隔位移平均值及圆心位移值平均值与左室其他各节段比较差异无统计学意义。扩张型心肌病组左室各节段圆心位移值明显小于正常对照组。结论:圆心位移值能够很敏感地检测出收缩功能减低的心肌节段,因此可利用其作为评价不同年龄儿童左室收缩时室壁运动的指标。

关键词: 超声心动图描记术, 实时三维, 左心室, 位移, 圆心位移

Abstract: Objective: To investigate the clinical value of real-time three-dimensional echocardiography(RT3DE) in assessment of left ventricular systolic excursion. Methods: Ten patients with dilated cardiomyopathy(DCM) and 55 normal children were studied. Full-volume RT3DE was performed using Philips IE33 with the X7-2 matrix array 3D transducer. Post-processing software Qlab (version 5.1.2) was used for advanced analysis. RT3DE can automatically measured average excursion and average ball excursion of every segments of LV. Results: In control group, excursion and ball excursion have no statistical difference in sex. Excursion and ball excursion had statistical difference in age. The excursion of apical LV segment was smaller than that of middle and basal segments. The ball excursion of basal segments was larger than that of middle and apical segments. There was no statistical difference in excursion and ball excursion between ventricular septum and other segments. The ball excursion was significant smaller in the DCM group than that of the normal group. Conclusion: Ball excursion can be used to assess systolic function of all the segments of left ventricle. RT3DE was proven a feasible and accurate method for analysis left ventricular systolic function in children.

Key words: Echocardiography, Real-time three-dimensional, Left ventricle, Excursion, Ball Excursion