定量组织速度成像及组织追踪成像评价矽肺患者右心室收缩功能变化

目的:探讨定量组织速度成像(quantitative tissue velocity imaging,QTVI)及组织追踪成像(tissue tracing imaging,TTI)对矽肺患者右室收缩功能变化的评估价值。方法:选择2012年11月—2014年1月江苏省南京市胸科医院收治的矽肺患者42例(矽肺组);同时选择性别、年龄相匹配的正常成人36例作为对照组。两组均行二维超声心动图检查,测量右心腔内径、右心室面积变化率(right ventricular fractional area change,RVFAC)、肺动脉收缩压(pulmonary artery systolic pressure,PASP)。应用QTVI获取右室游离壁三尖瓣环收缩期峰值速度(tricuspid annular peak systolic velocity,TAPVs);应用TTI获取右室游离壁三尖瓣环收缩期位移(tricuspid annular plane systolic excursion,TAPSE)。结果:矽肺组患者右心腔内径、RVFAC、PASP与对照组差异均无统计学意义(P0.05);矽肺组TAPVs、TAPSE均较对照组减低(P0.01)。结论:QTVI及TTI可以定量、简便、敏感地评价矽肺患者右室收缩功能的变化。

Evaluation of Right Ventricular Systolic Function in Patients with Silicosis by Quantitative Tissue Velocity Im-aging and Tissue Tracing Imaging

Objective：To evaluate the change of the right ventricular systolic function in patients with silicosis by quantitative tissue velocity imaging（QTVI）and tissue tracing imaging（TTI）.Methods：A total of 42 patients with silicosis treated in Nan-jing Chest Hospital from Nov 2012 to Jan 2014 （silicosis group）and 36 normal controls （control group）were enrolled in this study.The right heart diameter,right ventricular fractional area change （RVFAC）and pulmonary artery systolic pressure （PASP）were studied by two dimensional echocardiogram（2DE）.The tricuspid annular peak systolic velocity（TAPVs）and tri-cuspid annular plane systolic excursion（TAPSE）were measured by QTVI and TTI.Results：There were no significant differ-ence in the right heart diameter,RVFAC and PASP between the two groups.And the TAPVs,TAPSE in the silicosis group were lower than those in the control group （P 〈0.01）.Conclusions：QTVI and TTI may provide a quantitative,simple and sen-sitive tool for evaluation of the right ventricular systolic function in patients with silicosis.