脑脱髓鞘性假瘤的CT及MRI诊断

:430070,:(1975-),,,,,CTMRI,,,:CTMRI,:,3CTMRI:,CT,MRIT1T2,,:CTMRI,,;,X;R814.42;R744.5A100020313(2005)0220118203CTandMRIofDemyelinatingPseudotumoroftheBrainQIUHuai2ming,GAOBao2an,ZENGXiao2hua,etal.DepartmentofRadiology,PLAWuhanGeneralHospital,Wuhan430070,P.R.ChinaAbstractObjective:ToanalyzetheCTandMRImanifestationsofdemyelinatingpseudotumorofthebrainandtoin2creasethediagnosisaccuracy.Methods:TheCTandMRIimagingfeaturesofthreepathologicallyprovedcasesofdemyelina2tingpseudotumorofthebrainwereretrospectivelyanalyzed.Results:Allcasesappearedasasolitarymasswithoutadjacentaccompanyinglesions.OnplainCTscans,themajorityoflesionspresentedaslowdensity;onplainMRIscans,thelesionsmanifestedashomogenouslowsignalonT1WIandhighsignalonT2WI.Themajorityshoweddiffuseorannularenhance2ment.Peritumoraledemaandspaceoccupying2effectwerefoundrelativelymild.Conclusion:TheCTandMRImanifestationsofdemyelinatingpseudotumorofthebrainareshortofcharacteristic.Butgoodunderstandingofclinical,radiologicandpathologicmanifestationscanincreasethediagnosisaccuracyofthisdisease.KeywordsDemyelinatingdiseases;Tomography,X2raycomputed;Magneticresonanceimaging,,3,CTMRI,3,2,1,2437,32,37d;3,1;,;,:1CT,2MRI3CTGEHispeedAdvantageRPCT,510mm,510mm,60%100ml,1.5ml/s,60sMRIGESignaechospid1.5T,,SEFSE,T1WITR400550msTE1015ms,T2WITR20003000msTE90100ms,58mm,3mm,0.1mmol/kgGd2DTPA,1.CTMRI2,1,2,11CT,(1),,,,;2MRI,1T1T1(2),1T1T2;,CT2.81120052202RadiolPractice,Feb2005,Vol20,No.2©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.)CT,;b),2a)MRT1WIT1,T1;b)T2WIT2,;cd)3,,,,2070[1],,,,100%3::,,;;,,,,,11:,9,53,32,:,(3),,:,[2]:91120052202RadiolPractice,Feb2005,Vol20,No.2©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(3)21CT,,,,,;;;,,,CT,,,(1);,(2);,,,,[3]MRIT1T2,T1T1,T1T2MRICT,MRIMRCT,[4],2Masdeu[5],2,31,3:,,;,,,,;,;,;,,,,,:[1]VanderVeldenM,BotsGTAM,EndtzLJ.CranialCTinMultipleSclerosisShowingaMassEffect[J].SurgNeurol,1979,12(4):3072310.[2],,,.7[J].,2003,19(9):1342135.[3],.Bielschowsky[J].,2003,19(2):2162217.[4],,,.MRI[J].,2002,36(7):6012604.[5]MasdeuJC,MoreiraJ,TrasiS,etal.TheOpenRing:aNewImagingSigninDemyelinatingDisease[J].Neurorimaging,1996,6(2):1042107.(:2004207205:2004209202)02120052202RadiolPractice,Feb2005,Vol20,No.2©1994-2007ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.