实时三平面定量组织速度成像评价原发性高血压 左心室长轴收缩功能

目的：应用实时三平面定量组织速度成像测定原发性高血压患者左心室重构过程中长轴收缩功能的变化，探讨其临床应用价值。方法：选择原发性高血压患者101例和健康志愿者31例，应用实时三平面成像技术同时显示心尖四腔心、心尖两腔心和心尖左心室长轴切面，启动定量组织速度成像模式测定左心室各壁基底段和中间段收缩期峰值速度（Vs）。结果：根据Ganau分类法，高血压患者分为左心室正常构型（32例）、向心性重构（22例）、向心性肥厚（28例）和离心性肥厚（19例）4组。与正常对照组相比，高血压各组Vs均小于对照组相应节段（P<0.05，0.01），并且Vs在正常构型、向心性重构、向心性肥厚及离心性肥厚各组间呈逐渐减小的变化（P<0.05，0.01）。结论：实时三平面定量组织速度成像能够准确的评价原发性高血压患者左心室重构过程中长轴收缩功能的变化，具有重要的临床应用价值。

Assessment of left ventricular long-axis systolic function in patients with essential hypertension using real-time triplane quantitative tissue velocity imaging

Objective:To evaluate the alteration of left ventricular long-axis systolic function during left ventricular geo- metric remodeling in essential hypertension (EH) using real-time triplane quantitative tissue velocity imaging and to investigate its clinical significance. Methods: Totally 101 patients with EH and 31 healthy volunteers were enrolled. Systolic peak veloci- ty(Vs) was measured at basal and middle segments in different left ventricular walls using real-time triplane quantitative tissue velocity i...