◆STI评价LV收缩和舒张功能---冠心病传统超声心动图对冠心病(CAD)的诊断依赖患者出现节段性室壁运动异常，其对危冠心病早期阶段的诊断价值有限。由于心内膜下心肌纤维呈纵向排列，且对缺血最敏感，因此$T工对心肌的机械应变评估可能对早期冠心病的检出具有潜在价值。Shimoni S,et al.J Am Soc Echocardiogr.2011:24:748-757ST工评价LV收缩和舒张功能---冠心病静息状态下，对于无节段性室壁运动异常的冠心病患者，其GLS已较正常人显著下降；且GLS是CAD的独立预测因子，而局部LS可进一步对狭窄的冠脉及其主要分支进行定位诊断。ANTP=0.050P=0.030P=0.54LADLAD-16.00LCXLADRCALATANT SEPTLADLAD/CX-17.00LADLADLAD/CX3-1800LADLAD/X王LADLAD/CX-19.00LAD/RCARCA/CXLAD/RCA20.00RCARCA/CXNo CAD1VD2VD3VD(信=186(0=460=28n=33)SEPTRCAPOSTFigure 3.Global longitudinal peak systolic strain(GLS)andseverity of coronary artery disease(CAD).Mean GLS for patientsRCAstratified according to no CAD,1-vessel disease (Vp),2VD,and3VD.Dotted line indicates the cutoff of-18.4%.Error bars rep-resent SEs.INFBiering-Sorensen T et al.Circ Cardiovasc Imaging.2014;7:58-65
