速度向量成像技术对高血压患者颈总动脉管壁运动的分析研究

目的应用速度向量成像(VVI)技术探讨高血压患者颈总动脉管壁运动特点。方法采用VVI技术测量20例高血压患者(高血压组)和20例正常人(正常对照组)颈总动脉管壁短轴切面6个壁段(前壁、前内侧壁、后内侧壁、后壁、后外侧壁、前外侧壁)的最大径向速度(Vmax)、最大切向应变(Smax)及最大切向应变率(SRmax),并进行比较。结果正常对照组颈总动脉前壁、前外侧壁、后外侧壁Vmax高于前内侧壁、后内侧壁、后壁。高血压组Vmax各壁之间差异无统计学意义(P>0.05),高血压组颈总动脉各壁Vmax(除后壁外)均小于正常对照组(P<0.05)。高血压组与正常对照组各壁间Smax、SRmax比较差异均无统计学意义(P>0.05),高血压组颈总动脉各壁段Smax、SRmax均小于正常对照组的对应壁段(P<0.05)。高血压组颈总动脉运动协调性较正常对照组差。结论 VVI技术可对高血压患者颈总动脉管壁运动的特点进行分析。

Assessment of motion dynamic characteristics of common carotid artery wall in the patients with hypertension by velocity vector imaging

Objective To investigate the characteristics of carotid arterial wall motion in the patients with hypertension by velocity vector imaging (VVI) technique.Methods Two-dimensional dynamic images of common carotid artery (CCA) both in the twenty patients with hypertension and the twenty subjects as the normal control group were examined with color Doppler ultrasound. The carotid artery wall was divided into six segments:anterior wall,posterior wall,anterolateral wall,anterior internal wall,posterolateral wall ...