二次谐波显像技术评价左房增大自发性声学显影的临床应用  

To evaluate the spontaneous echo contrast in tissue harmonic imaging

作　　者：刘霞[1] 魏丽萍[1] 郄占军[1] 王琴[1] 

机构地区：[1]宁夏医学院附属医院,宁夏银川750004

出　　处：《宁夏医学杂志》2004年第2期81-82,F003,共3页Ningxia Medical Journal

摘　　要：目的　应用组织二次谐波显像技术 (Tissueharmonicimaging ,THI)检查风心病左房增大患者 ,补充常规超声检查所不能显示的自发性声学显影 (SEC) ,提高超声对自发性显影的诊断能力 ,为临床提供风心患者发生血栓的诊断依据。方法　对 2 2例左房扩大风心患者 ,按左房内径大小分为两组。采用经胸超声心动图常规检测后 ,使用二次谐波显像功能观测左房、左心耳内自发性显影回声 ,与常规超声对比。结果　在风心病组左房增大者Ⅰ组常规超声及THI均未检测到自发性显影 ;Ⅱ组常规超声心动图未能检测自发性显影 ,而THI全部检测到自发性显影。自发性显影呈星云状回声 ,逆时针旋转 ,在有陈旧性血栓患者也可见显影。结论　二次谐波显像技术能够提高心脏血栓的诊断率 ,是常规超声不可缺少的补充。自发性声学显影预示着左房血栓形成和体循环栓塞的的危险性增加。Objective Tissue harmonic imaging(THI) was used to exam rheumatic patients who left artrium extended.To find the spontancous echo congtrast(SEC) Could display in common echo.It increased the diagnosis ability of echo and offered diagnosis evidence about thrombus's existence of rhoumatic patients.Methods After 22 rheamatic patients whose left atrium extended were examined by common thorax echo,THI was used to inspect SEC in let atrium and left atrium appendage and contrast with common echo.Accord to size,left atrium were divided into two groups.Results SEC was examied in common echo and THI of patients in rheumatic patient group(Ⅰ group).SEC was displaied in THI of Ⅱ.SEC looked like nebular shape and revolve at reverse clock direction,obsolete thrombus also could be displaied.Conclusion THI can increase diagnosis ratio of cardiol thrombus and supply a nessaary for common echo.SEC will forecast an increase in crisis of thrombus form and whole circulation in left atrium embolism. [

关 键 词：组织二次谐波显像技术 自发性声学显影 左房血栓 

分 类 号：R541.2[医药卫生—心血管疾病]