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ID:19635015
大小:13.21 MB
页数:100页
时间:2018-10-04
《积水潭膝关节mri》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、PracticalInterpretationofKneeMRIRoutineMRIprotocolSagittal,Coronal,AxialSpinecho(SE)FSE,STIRT1,T2,PDJSTCoronal:T2FFET2STIRSaggital:T1T2T2FFET2STIRTR和TE决定成像加权短TE长TE短TRT1无用途长TRPDT2T1weightedimage(TR<1000msec,TE<40msec)“anatomy”T2weightedimage(TR>1500msec,TE>60msec)“patholo
2、gy”FatsuppressionChemicalsaturationShorttauinversionrecovery(STIR)TissuecharacterizationT1T2AdiposetissueFatwhitegrayYellowmarrowWaterdarkwhiteCorticalboneblackblackCartilagegraygrayTendon/ligament/meniscusblack/grayblack/grayMusclegraygrayHematomawhitewhiteChronichemorr
3、hagedarkdarkAnteriorCruciateLigamentextensionER15°—20°NormalMRappearancedirectsignoftornACLdiscontinuityabnornalorientation(fallenACL)nonvisualizationAvulsionfxIndirectBonebruisesignDeepsulcussignSegondfxgeneralizedincreaseinsignalintensitythicknessincreaseAnteriordrawe
4、rsignAcutehemarthrosisBucklingofPCLpivot-shiftpatternKissingsignSegondsignDeepsulcussign>2mmgeneralizedincreaseinsignalintensitythicknessincreaseBucklingofPCLnonspecificAnt.drawersignAssociatedsofttissueinjuriesPosteriorhornofmedialmeniscusBuckethandletearMCLPosteriorCru
5、ciateLigamentNormalMRappearanceMeniscus-FemoralligamentPrimarysignofPCLcompletetearpartialtear“peeloff”injuryCompletetearGrade1Grade3Grade2partialtearSecondarysignofPCLinjurybonemarrowedema(BME)avulsionfxDashboardinjurysignBoneMarrowEdemaTibialavulsionfxAssociatedligam
6、entinjuryACLinjuryMCLinjuryPLC/LCLinjuryCollateralligamentNormalAnatomyofMCLGradingMCLInjuriesGrade1(sprain)Grade2(partialtear)Grade3(completetear)NormalAnatomyoftheLCLComplex/PosterolateralCornerComplexIliotibialbandLCLPoplitealm.complexBicepstendonVisibledisruptionofon
7、eoftheposterolateralcapsulestructuresExtensivesurroundingsofttissueedemaAvulsionfractureormarrowedemainvolvingthemedialaspectofthefibularheadSignsofPosterolateralCornerInjuryMeniscibowties<2triangularrectangularCriterialtodetectmeniscalteargrade3signalabnormalmeniscalmor
8、phologydisplacedormissingmeniscaltissuemeniscocapsularseparationGradeIIImeniscustearmissingfragmentDisp
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