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ID:33396412
大小:1.48 MB
页数:30页
时间:2019-02-25
《组织二尖瓣环位移法定量评价左心收缩功能及病变程度》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、南昌大学硕士学位论文组织二尖瓣环位移法定量评价左心收缩功能及病变程度姓名:罗娟申请学位级别:硕士专业:影像医学与核医学指导教师:周爱云20120529摘要目的:(1)探讨TMAD技术逆向定量评价左心室收缩功能中的应用:(2)探讨TMAD技术在检测左心功能减低患者的应用前景。方法:本研究选取50例健康志愿者(E眨55%)和125例左-tl,收缩功能减低患者(EF<55%),心功能减低患者根据辛普森法所测左室射血分数,将心功能减低组再分为以下各亚组,EF:50%~54%、EF.45%~49%、EF:40%~44%、EF:35%~39%及EF:S34
2、%,各亚组25例。使用PhilipsIE33超声显像仪,运用织运动二尖瓣环位移自动追踪(TMAD)技术系统自动算出TMADl:室间隔点最大位移;TMAD2:侧壁点最大位移;TMADMidpt:室间隔.侧壁点连线中点最大位移;TMADMidpt%:室间隔.侧壁点连线中点最大位移占左室长径百分比。结果:(1)一tl,功能减低组二尖瓣环位移曲线形态不规则,TMAD各项测值均显著低于对照组(P均3、百分比相关性最好。结论:TMAD技术简便易行,可重复性高,有望成为评价左心室收缩功能的一个新的、甚至可替代LVEF的指标。我们试图根据定量TMAD值来逆向评价左室收缩功能。关键词:组织运动二尖瓣环位移自动追踪技术;超声一tl,动描记术;Simpson法;心博量AbstractABSTRACTobiectives:(1)ToprobetheapplicationofTMADinleftventricularsystolicfunctionconversely;(2)ToprobetheapplicationofTMADindetectingpat4、ientswiththereducedcardiacfunction.Methods:Thestudyselected50healthysubjects(EF>55%)and125patientswiththereducedcardiacfunction(EF<55%),AccordingtotheLVEFbySimpson’Smethod,the125patientsofthereducedcardiacfunctionweredividedtosubset,eachsubsethave25cases(EF:50%-54%,EF:45%一495、%,EF:40%-44%,EF:35%.39%,EF:<35%、.ThestudyapplyPhilipsIE33ultrasonicimagingapparatus’TMADtoacquireTMAD1(Themaximumdisplacementofinterventricularseptum);TMAD2:(Themaximumdisplacementoflateralwall);TMADMidpt:Themaximumdisplacementofthemidpointconnectinginterventricularseptumand6、lateralwall);TMADMidpt%:theratioofthemaximumdisplacementofthemidpointaccountedforlengthdiameterinventriculussinister.Results:(1)theshapeoftheTMADcurveofpatientswiththereducedcardiacfunctionareirregular,ThevaluesofthereducedcardiacfunctiongroupmeasuredbyTMADweresignificantlyl7、owerthanthecontrolgroup(P<0.01).(2)BothofthevaluesTMADandLVEFaregoodcorrelation(P<0.01),eachofthevalueswerehigherrepeatability.(3)thecorrelationofTMADMidpt%andLVEFarehighest.Conclusion:TheTMADexpectedtobecomeanewevenaltemativeLVEFindicatorbecauseofsimpleoperationandhighrepea8、tability.WetrytoevaluatetheleftventricularsystolicfunctionbyTMADvalueconver
3、百分比相关性最好。结论:TMAD技术简便易行,可重复性高,有望成为评价左心室收缩功能的一个新的、甚至可替代LVEF的指标。我们试图根据定量TMAD值来逆向评价左室收缩功能。关键词:组织运动二尖瓣环位移自动追踪技术;超声一tl,动描记术;Simpson法;心博量AbstractABSTRACTobiectives:(1)ToprobetheapplicationofTMADinleftventricularsystolicfunctionconversely;(2)ToprobetheapplicationofTMADindetectingpat
4、ientswiththereducedcardiacfunction.Methods:Thestudyselected50healthysubjects(EF>55%)and125patientswiththereducedcardiacfunction(EF<55%),AccordingtotheLVEFbySimpson’Smethod,the125patientsofthereducedcardiacfunctionweredividedtosubset,eachsubsethave25cases(EF:50%-54%,EF:45%一49
5、%,EF:40%-44%,EF:35%.39%,EF:<35%、.ThestudyapplyPhilipsIE33ultrasonicimagingapparatus’TMADtoacquireTMAD1(Themaximumdisplacementofinterventricularseptum);TMAD2:(Themaximumdisplacementoflateralwall);TMADMidpt:Themaximumdisplacementofthemidpointconnectinginterventricularseptumand
6、lateralwall);TMADMidpt%:theratioofthemaximumdisplacementofthemidpointaccountedforlengthdiameterinventriculussinister.Results:(1)theshapeoftheTMADcurveofpatientswiththereducedcardiacfunctionareirregular,ThevaluesofthereducedcardiacfunctiongroupmeasuredbyTMADweresignificantlyl
7、owerthanthecontrolgroup(P<0.01).(2)BothofthevaluesTMADandLVEFaregoodcorrelation(P<0.01),eachofthevalueswerehigherrepeatability.(3)thecorrelationofTMADMidpt%andLVEFarehighest.Conclusion:TheTMADexpectedtobecomeanewevenaltemativeLVEFindicatorbecauseofsimpleoperationandhighrepea
8、tability.WetrytoevaluatetheleftventricularsystolicfunctionbyTMADvalueconver
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