脑肿瘤脊髓肿瘤CTMRI.ppt

脑肿瘤、脊髓肿瘤CT、MR,Tumors肿瘤,Gliomas胶质瘤Meningiomas脑膜瘤Pituitarytumor垂体瘤Acousticneurinoma听神经瘤Craniopharyngioma颅咽管瘤Metastatictumors转移瘤Etc等等,Gliomas胶质瘤,AstrocytictumorsOligodendroglialtumorsEpendymalcelltumorsMixedgliomas,AstrocytomaLow-grade,Astrocytoma,GBM,GBM,GBM,Oligodendroglioma,Oligodendroglioma,Oligodendroglioma,Ependymoma,Ependymoma,Ependymoma,Diagnosisanddifferentialdiagnosisforglioma胶质瘤的诊断和鉴别诊断,Meningioma脑膜瘤,Meningiomasrepresent15%ofallbraintumorsMeningiomasaremorecommoninwomenthaninmen,withamale-to-femaleratioof1:2Meningiomashaveapredilectiontooccurfromthethirdtosixthdecadesoflife,withapeakincidenceoccurringinindividualsagedapproximately45years.,Meningioma,Meningioma,Meningioma,Meningioma,Meningioma,PituitaryAdenoma垂体瘤,Tumourarisingfromthecellsofthepituitarygland.Microadenoma(10mm)Pituitaryadenomasareusuallybenigntumours,andpituitarycarcinomasareveryrare.,PituitaryAdenoma垂体瘤,CoronalandsagittalthinsliceT1-weightedimages,withoutandwithcontrastenhancement.Microadenomasareusuallyiso-hypointenseandareparticularlywellseenaftergadoliniuminjectionwhenthepituitaryglandenhanceshomogeneously.Thedirectionofgrowthofmacroadenomaiswellappreciatedandinvolvementofchiasmandcavernoussinusmaybedetected.,Microadenoma,pituitary,Microadenoma,pituitary,Delayafewminutes,Acousticneurinoma听神经瘤,PlainfilmCTMRI,Craniopharyngioma颅咽管瘤,Craniopharyngiomasaretypicallyfoundinthefirsttwodecadesoflifeandusuallyhavebothsolidandcysticcomponents.Cystcontentmayhavedifferentappearancesbutusuallyappearsasmachine-oilandcontainscharacteristicsuspendedcholesterolcrystals.Calcificationsarepresentinthevastmajorityofthesetumours.,Metastatictumors转移瘤,Sex:primarytumor.Lungcanceristhemostcommonsourceofmetastasesinmalepatients,whilebreastcanceristhemostcommonsourceinfemalepatients.Age:primarysystemictumors.Mostbrainmet