心肌组织超声背向散射参数临床应用研究

本文报道了２０例陈旧性心梗（ＯＭＩ）、３３例扩张型心肌病（ＤＣＭ）、５６例高血压病（ＨＴ）、１２例肥厚型心肌病（ＨＣＭ）患者和正常对照组４０例心肌超声背向散射参数检查结果。正常组各节段心肌平均ＩＢ％相近，ＣＶＩＢ略有差异。ＯＭＩ梗塞灶、ＤＣＭ和出现并发症的ＨＴ患者（１９／５６）心肌平均ＩＢ％均增大，ＣＶＩＢ均减低或ＩＢＳ曲线形态异常，无并发症的ＥＴＨ患者ＩＢ％、ＣＶＩＢ无显著改变。ＨＣＭ患者ＩＶＳ的ＩＢ％增大，ＣＶＩＢ减低，ＩＶＳ左室侧１／２心肌ＣＶＩＢ大于右室侧１／２；ＬＶＰＷ的ＩＢ％和ＣＶＩＢ与正常组无显著差异。

A Study to Evaluate Ultrasonic Backscatter Parameters of Myocardium in Clinical Application

Parameters of ultrasonic backscatter of myocardium of patients of OMI(20),DCM(33),HT(56),HCM(12)and control group(40)were measured by a modified backscatter signal imaging system.IB% values of myocardium of all divisions of normal hearts were similiar,and CVIB values had a little difference.For infarcted focus of OMI patients and myocardium of DCM,complicated HT(19/56),values of IB% increased greatly,and values of CVIB decreased,or IBS curves turned out to be abnormally shaped,Values of IB% and CVIB of myocardium seemed to be unchanged for those uncomplicated HT patients.For patients of HCM,levels of mean IB% of IVS were heightened and those of CVIB were lowered down,but CVIB values of left half of IVS were significantly bigger than those of right half of IVS.And values of IB% and CVIB of LVPW of HCM patients had little difference with those of normal group.