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ID:32352017
大小:3.43 MB
页数:25页
时间:2019-02-03
《320排动态容积ct左心功能检查准确性研究》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、重庆医科大学硕士研究生学位论文SV。320排CT左心功能传统重建法与3.0TMR_I左心功能参数配对t检验显示:两种方法测得EDV及ESV差异无显著性(t=0.257、3.628;P>0.05),测得EF及SV值差异较显著(’t=.2-.623、.2.093;P<0.05);320排CT左心功能优化重建法与3.0TMRI左心功能参数配对t检验显示EDV、ESV、EF、SV四组数据差异均不显著(t=.1.783--0.194,P>0.05)o-经Bland.Altman分析方法显示,320排CT传统重建
2、法与3.0TMⅪEDV、ESV、EF、SV相差1.09ml、0.47ml、.0.89%、0.46ml,320排CT优化重建法与3.0TMRIEDV、ESV、EF、SV相差O.95ml、.0.07ml、0.02%、1.0ml,其中ESV及EF偏差非常小,几乎可以忽略。SRW左心室功能测量时间为(52.50±6.oo)分钟,而ORW所用时间为(11.68±1.74)分钟。所有病例冠脉CTA图像均可用于临床诊断。结论:320排动态容积CT优化重建法与传统重建法均可以准确评价左心室功能,且优化重建法能明显减少
3、数据的后处理时间,具有更高的临床应用价值。像关键词:心脏;j心室功能;体层摄影术,x线计算机;磁共振成重庆医科大学硕士研究生学位论文ACCURACYCOMeAmSONOF320-ROWVOLUMECTINLEFTHEARTFUNGTIoNABSTRACTobjective:To.comparedwith3.0TMRI.accuracyassessmentof320一CTthestandardreconstructionwindow(SRW)andoptimalreconstructionwindow(
4、ORW)ontheleftventricularfunction.Toprovideamoreaccurate,reliableandrapidimagingmethodinleftventricularfunctionMethods:Sixty·fourpatientswithclinicallysuspicionofleftheartinsufficiencywereunderwent320-rowVolumeCTand3.0TMRIexaminationwithinoneweek.Rebuild
5、theleftventficularfunctionscanof320-CTatintervaIsof5%,accordingtothetime—volumecurveobtainedend-diastolic(ED)andend-systolic(ES)locationphase,phaseEDandESstatistics,andthenrebuildthestatisticalvaluewithEDandES,namelytheoptimalreconstructionwindow,andthe
6、naccordingtothetraditionalinintervalsof10%datareconstruction.Leftventricularfimctionparametersobtainedbythetwomethodswerecomparedwith3.0TMRI,andcomparisonoftwomethods.Theparametersofleftventricularfunctionincludingend-diastolicvolume(EDV),end—systolicvo
7、lume(ESV),ejectionfraction(EF)andstrokevolume(SV)wereanalysedrespectively)Results:ForORWmeasurement.0%oftheR-RintervalwasasthephaseofEDfordlsubjects,whenheartrates(HR)were<65beatpermin(bpm);from65to79bpm,and>80bpm,30%,35%and40%oftheR-Rintervalwasastheph
8、asesofES,respectivelyandobtaintheleftventricularfunctionparametersofEDV,ESV,EF.SV.Theleftventricularfunctionparametersof320一CTSRWand3.0TMRIpairedttestshowed:therewerenostatisticallysignificantdifferencesinEDVandESVbetweenbothmeas
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