摘要
目的应用速度向量成像技术定量分析扩张型心肌病（DCM）患者左心室扭转运动，探讨该技术在心脏扭转运动研究中的应用价值。方法应用速度向量成像技术测量27例DCM患者与60例正常对照者左室内径及心功能，并于心底部与心尖部短轴观分别获取两个切面心内膜与心外膜旋转角度、旋转速度曲线。结果DCM组心功能明显低于对照组（P〈0．01），心底部与心尖部旋转角度和旋转速度、心内膜与心外膜旋转角度和旋转速度DCM组均明显低于对照组（P〈0．01）。结论速度向量成像可快速、无创、定量评价DCM患者左室扭转运动，为了解DCM心脏运动特征提供了新的方法。
Objective To characterize the systolic torsion in dilated cardiomyopathy （DCM） by velocity vector imaging（VVI）. Methods Eighty-seven subjects were studied using VVI 27 patients with DCM and 60 healthy control subjects. Left ventricular short-axis acoustic images were acquired at base and apex levels. The rotation angle and rotation velocity of endocardium and epicardium were measured. Results LVEF of DCM group was significantly lower than that of control group （ P〈0. 01）. The basal and apical rotation angle, rotation velocity were significantly lower in DCM group. The endocardial and epicardial rotation angle, rotation velocity were also significantly lower in DCM group than those in control group （P 〈 0.01）. Conclusions VVI is a rapid and noninvasive tool to quantitatively assess cardiac torsional deformation in DCM patients,which providing another useful modality for evaluating cardiac function.
出处
《中华超声影像学杂志》
CSCD
2008年第5期378-380,共3页
Chinese Journal of Ultrasonography
关键词
超声心动描记术
心肌病
扩张型
心室功能
左
扭转
速度向量成像
Echocardiography
Cardiomyopathy, dilated
Ventricular function, left
Torsion
Velocity vector imaging
