脑肿瘤、脊髓肿瘤CT、MR(吴仁华).ppt

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1、脑肿瘤、脊髓肿瘤CT、MRTumors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AstrocytictumorsOligodendroglialtumorsEpendymalcelltumorsMixedgliomasAstrocytomaLow-gradeAstrocytomaGBMGBMGBMOligodendrogliomaOligod

2、endrogliomaOligodendrogliomaEpendymomaEpendymomaEpendymomaDiagnosisanddifferentialdiagnosisforglioma胶质瘤的诊断和鉴别诊断Meningioma脑膜瘤Meningiomasrepresent15%ofallbraintumorsMeningiomasaremorecommoninwomenthaninmen,withamale-to-femaleratioof1:2Meningiomashaveapredilectiontooccurfr

3、omthethirdtosixthdecadesoflife,withapeakincidenceoccurringinindividualsagedapproximately45years.MeningiomaMeningiomaMeningiomaMeningiomaMeningiomaPituitaryAdenoma垂体瘤Tumourarisingfromthecellsofthepituitarygland.Microadenoma(<10mm)Macroadenoma(>10mm)Pituitaryadenomasareus

4、uallybenigntumours,andpituitarycarcinomasareveryrare.PituitaryAdenoma垂体瘤CoronalandsagittalthinsliceT1-weightedimages,withoutandwithcontrastenhancement.Microadenomasareusuallyiso-hypointenseandareparticularlywellseenaftergadoliniuminjectionwhenthepituitaryglandenhancesho

5、mogeneously.Thedirectionofgrowthofmacroadenomaiswellappreciatedandinvolvementofchiasmandcavernoussinusmaybedetected.Microadenoma,pituitaryMicroadenoma,pituitaryDelayafewminutesAcousticneurinoma听神经瘤PlainfilmCTMRICraniopharyngioma颅咽管瘤Craniopharyngiomasaretypicallyfoundint

6、hefirsttwodecadesoflifeandusuallyhavebothsolidandcysticcomponents.Cystcontentmayhavedifferentappearancesbutusuallyappearsas"machine-oil"andcontainscharacteristicsuspendedcholesterolcrystals.Calcificationsarepresentinthevastmajorityofthesetumours.Metastatictumors转移瘤Sex:p

7、rimarytumor.Lungcanceristhemostcommonsourceofmetastasesinmalepatients,whilebreastcanceristhemostcommonsourceinfemalepatients.Age:primarysystemictumors.Mostbrainmetastasesoccurinpatientsaged35-70years.CTMRISpinalcord脊髓ExamniationmethodsFindingsandanalysis