心肌矢量应变和应变率成像技术对晚期肝硬化患者左心室局部收缩功能的评价

目的:应用心肌矢量应变和应变率成像技术（VSI）观察晚期肝硬化患者左心室局部收缩功能，探讨晚期肝硬化患者左心室局部收缩功能的改变。方法:VSI技术检测30例晚期肝硬化患者（患者组）及30例年龄匹配的正常对照者（对照组）左心室16节段室壁收缩期纵向、径向应变率及圆周方向运动速度。结果: 患者组纵向应变率收缩期峰值（L-SRs）前间隔中间段、前壁心尖段、室间隔心尖段较对照组减低（P<0.05）；患者组径向应变率收缩期峰值（R-SRs）值前间隔中间段、室间隔心尖段较对照组减低（P<0.05）；患者组圆周方向运动速度收缩期峰值（C-Vs）前壁中间段、前间隔中间段较对照组减低（P<0.05）。结论: 晚期肝硬化患者在左心室整体收缩功能未受到明显影响以前，局部心肌已经出现收缩功能减低。

Assessment of regional left ventricular systolic function of patients with late-stage liver cirrhosis by VSI

Objective To evaluate the regional left ventricular systolic function of patients with late-stage liver cirrhosis by application of vector myocardial strain and strain rate imaging(VSI),and discuss the changes of the regional left ventricular systolic function of patients with late-stage liver cirrhosis.Methods The longitudinal peak systolic strain rates(L-SRs),radial peak systolic strain rates(R-SRs) and circumferential peak systolic velocity(C-Vs) in 30 patients with late-stage liver cirrhosis(patient gro...