脑肿瘤、脊髓肿瘤CT、MR吴仁华

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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-gradeAstrocytomaGBMGBMGBMOligode

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

3、giomashaveapredilectiontooccurfromthethirdtosixthdecadesoflife,withapeakincidenceoccurringinindividualsagedapproximately45years.MeningiomaMeningiomaMeningiomaMeningiomaMeningiomaPituitaryAdenoma垂体瘤Tumourarisingfromthecellsofthepituitarygland.Microadenoma

4、(<10mm)Macroadenoma(>10mm)Pituitaryadenomasareusuallybenigntumours,andpituitarycarcinomasareveryrare.PituitaryAdenoma垂体瘤CoronalandsagittalthinsliceT1-weightedimages,withoutandwithcontrastenhancement.Microadenomasareusuallyiso-hypointenseandareparticularl

5、ywellseenaftergadoliniuminjectionwhenthepituitaryglandenhanceshomogeneously.Thedirectionofgrowthofmacroadenomaiswellappreciatedandinvolvementofchiasmandcavernoussinusmaybedetected.Microadenoma,pituitaryMicroadenoma,pituitaryDelayafewminutesAcousticneurin

6、oma听神经瘤PlainfilmCTMRICraniopharyngioma颅咽管瘤Craniopharyngiomasaretypicallyfoundinthefirsttwodecadesoflifeandusuallyhavebothsolidandcysticcomponents.Cystcontentmayhavedifferentappearancesbutusuallyappearsas"machine-oil"andcontainscharacteristicsuspendedchol

7、esterolcrystals.Calcificationsarepresentinthevastmajorityofthesetumours.Metastatictumors转移瘤Sex:primarytumor.Lungcanceristhemostcommonsourceofmetastasesinmalepatients,whilebreastcanceristhemostcommonsourceinfemalepatients.Age:primarysystemictumors.Mostbra

8、inmetastasesoccurinpatientsaged35-70years.CTMRISpinalcord脊髓ExamniationmethodsFindingsandanalysis