应用组织追踪技术分析健康人左心室心肌力学参数

发布时间：2018-02-23 17:04

本文关键词： 心脏磁共振组织追踪技术应变位移扭转　出处：《东南大学学报(医学版)》2017年03期 　论文类型：期刊论文

【摘要】：目的:分析健康成年人左心室整体和局部心肌力学参数及性别差异。方法:连续选取2015年10月至2016年8月于乌尔姆大学医院进行1.5 T心脏磁共振检查的健康成年男、女性各50名。进行稳态自由进动序列成像并半自动地勾画出左心室心内、外膜位置后,使用组织追踪技术测量左心室整体和局部(基底段、中间段和心尖段)心肌在径向、周向和纵向的应变、应变率、位移、位移速度、扭转和扭转率峰值,采用t检验或非参数检验比较性别差异。结果:(1)女性整体和局部心肌应变、应变率的峰值水平均高于男性;(2)女性中间段心肌纵向位移的峰值水平高于男性;(3)女性整体和中间段心肌纵向位移速度的峰值水平高于男性;(4)扭转和扭转率均未见显著性别差异。结论:女性左心室整体和局部的部分力学参数水平高于男性。
[Abstract]:Objective: to analyze the global and local myocardial mechanical parameters and sex differences of left ventricle in healthy adults. Methods: healthy adult men who underwent 1.5T cardiac magnetic resonance examination from October 2015 to August 2016 in Ulm University Hospital were selected. Fifty women each underwent steady-state free-precession sequence imaging and semi-automatic mapping of the position of the left ventricular endocardium and adventitia. The whole and local myocardium of the left ventricle (basal segment, middle segment and apical segment) were measured by tissue tracing technique in radial direction. Circumferential and longitudinal strain, strain rate, displacement, displacement velocity, torsion and torsion rate peak. T test or nonparametric test were used to compare the sex difference. The peak level of strain rate is higher than that of male (2) the peak value of longitudinal displacement in female middle segment is higher than that in male (3) the peak level of longitudinal displacement in female and middle segment is higher than that in male (4) the rate of torsion and torsion is not found. Conclusion: the partial mechanical parameters of the left ventricle in women are higher than those in men.
【作者单位】：东南大学医学院;乌尔姆大学医院内科Ⅱ;东南大学附属中大医院心血管内科;
【分类号】：R445.2

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