定量组织速度成像技术评价冠心病患者右心室功能的应用价值

Assessment of right ventricular function in patients with coronary artery disease using quantitative tissue velocity imaging

关键词:  定量组织速度成像  冠心病  右心功能

Key words:  quantitative tissue velocity imaging  coronary artery disease  right ventricular function

摘要:

［目的］探讨定量组织速度成像技术(QTVI)在冠心病(CAD)患者右心室局部舒缩功能的应用价值。［方法］应用QTVI获取45例CAD组和45例正常对照组右心室心肌不同位点的心肌多普勒速度曲线，分析并比较两组人群间收缩期峰值速度（Vs）、舒张早期峰值速度和舒张晚期峰值速度（Ve、Va）、计算Ve/Va、测量等容收缩时间（ICT）、等容舒张时间（IRT）、射血时间（ET）、心室舒张充盈时间（DFT）。［结果］CAD患者Vs、Ve、Ve/Va、ET、DFT均比正常对照组减低，Va、ICT、IRT均比正常对照组延长。［结论］CAD患者右心室局部舒缩功能受损，QTVI提供了一种精确、快速、无创地评价CAD患者右心室局部舒缩功能变化的新方法。

Abstract:

［Objective］To investigate the value of quantitative tissue velocity imaging(QTVI)in assessing the right ventricular regional diastolic and systolic function in patients with coronary artery disease(CAD).［Methods］A total of 45 patients with CAD and 45 normal subjects were studied by QTVI, measured velocity of systole(Vs),early diastole velocity(Ve),late diastole velocity(Va),Ve/Va, isovolumetric contraction time(ICT),isovolumetric relaxation time(IRT),ejection time(ET),diastole filling time(DFT).［Results］The Vs, Ve, Ve/Va,ET,DFT were shorted and the Va,ICT,IRT were prolonged in the patients with CAD compared with these in normal subjects.［Conclusion］CAD caused right ventricular regional diastolic and systolic funetion impaired,QTVI is a sensitive,rapid,non-invasive method to assess the right ventricular regional diastolic and systolic function in CAD patients.