积水潭膝关节MRIVIP专享VIP免费

J.S.T北京积水潭医院关节镜组PracticalInterpretationPracticalInterpretationofofKneeMRIKneeMRIRoutineMRIprotocolRoutineMRIprotocolSagittal,Coronal,AxialSpinecho(SE)FSE,STIRT1,T2,PDJSTJSTCoronal:T2FFET2STIRSaggital:T1T2T2FFET2STIRJ.S.T北京积水潭医院关节镜组TRTR和和TETE决定成像加决定成像加权权短TE长TE短TRT1无用途长TRPDT2T1weightedimage(TR<1000msec,TE<40msec)“anatomy”T2weightedimage(TR>1500msec,TE>60msec)“pathology”FatsuppressionChemicalsaturationShorttauinversionrecovery(STIR)J.S.T北京积水潭医院关节镜组TissuecharacterizationTissuecharacterizationT1T2AdiposetissueFatwhitegrayYellowmarrowWaterdarkwhiteCorticalboneblackblackCartilagegraygrayTendon/ligament/meniscusblack/grayblack/grayMusclegraygrayHematomawhitewhiteChronichemorrhagedarkdarkAnteriorCruciateLigamentAnteriorCruciateLigamentextensionextensionER15°—20°ER15°—20°NormalMRappearanceNormalMRappearanceNormalMRappearanceNormalMRappearanceJ.S.T北京积水潭医院关节镜组directsignoftorndirectsignoftornACLACLdiscontinuityJ.S.T北京积水潭医院关节镜组abnornalorientation(fallenACL)nonvisualizationAvulsionfxAvulsionfxIndirectIndirectBonebruisesignDeepsulcussignSegondfxgeneralizedincreaseinsignalintensitythicknessincreaseAnteriordrawersignAcutehemarthrosisBucklingofPCLpivot-shiftpatternpivot-shiftpatternKissingsignKissingsignSegondsignSegondsignJ.S.T北京积水潭医院关节镜组Deepsulcussign>2mm>2mmgeneralizedincreaseinsignalintensitythicknessincreaseBucklingofPCLBucklingofPCLnonspecificnonspecificAnt.drawersignAnt.drawersignJ.S.T北京积水潭医院关节镜组AssociatedsofttissueinjuriesAssociatedsofttissueinjuriesPosteriorhornofmedialmeniscusBuckethandletearMCLPosteriorCruciateLigamentPosteriorCruciateLigamentNormalMRappearanceNormalMRappearanceMeniscus-FemoralligamentMeniscus-FemoralligamentJ.S.T北京积水潭医院关节镜组J.S.T北京积水潭医院关节镜组J.S.T北京积水潭医院关节镜组PrimarysignofPCLPrimarysignofPCLcompletetearcompletetearpartialtearpartialtear“peeloff”injury“peeloff”injuryCompletetearGrade1Grade3Grade2partialpartialteartearSecondarysignofPCLinjurySecondarysignofPCLinjurybonemarrowedema(BME)bonemarrowedema(BME)avulsionfxavulsionfxDashboardinjurysignDashboardinjurysignBoneMarrowEdemaBoneMarrowEdemaTibialavulsionfxTibialavulsionfxAssociatedligamentinjuryAssociatedligamentinjuryACLinjuryMCLinjuryPLC/LCLinjuryCollateralligamentCollateralligamentNormalAnatomyofMCLGradingMCLInjuriesGrade1(sprain)Grade2(partialtear)Grade3(completetear)NormalAnatomyoftheLCLComplex/PosterolateralCornerComplexIliotibialbandIliotibialbandLCLLCLPoplitealm.complexPoplitealm.complexBicepstendonBicepstendon•Visibledisruptionofoneoftheposterolateralcapsulestructures•Extensivesurroundingsofttissueedema•AvulsionfractureormarrowedemainvolvingthemedialaspectofthefibularheadSignsofPosterolateralCornerInjuryMenisciMeniscibowties<2bowties<2triangulartriangularrectangularrectangularJ.S.T北京积水潭医院关节镜组CriterialtodetectmeniscaltearCriterialtodetectmeniscalteargrade3signalabnormalmeniscalmorphologydisplacedormissingmeniscaltissuemeniscocapsularseparationGradeIIImeniscustearGradeIIImeniscustearmissingfragmentmissingfragmentDisplacedfragmentDisplacedfragmentsmallPHMMsmallPHMMsmallPHMMsmallPHMMJ.S.T北京积水潭医院关节镜组J.S.T北京积水潭医院关节镜组MRIsignsMRIsignsabsentbowtiessign(1orfewer)doublePCLsignlargeanteriorhornsignto...