腦部的正常CT及MRI解剖課件

腦部----(1)腦部----(1)腦部的正常CT及MRI解剖腦部的正常CT及MRI解剖腦部解剖構(gòu)造---

BrainParenchyma(腦實質(zhì))Cerebrum:frontallobe,temporallobe,parietallobe,occipitallobeCerebellumBasalganglia,thalamusBrainstem,midbrain腦部解剖構(gòu)造---

BrainParenchyma(腦實質(zhì)Subarachnoidspaces

(蜘蛛網(wǎng)膜下腔,CSFspaces)Ventricles(腦室)---lateral,3rd,4thventriclesCisterns(腦池)---suprasellar,quadrigeminalcisterns(四疊體腦池)….Fissures(腦裂)---Sylvian,interhemisphericfissures…Sulci(腦溝)Subarachnoidspaces

(蜘蛛網(wǎng)膜下腔,F:frontallobe P:ponsT:temporallobe s:suprasellarcistern(碟鞍上腦池)Ce:cerebellum d:dorsumsellaFTCesPdparietallobe4thVF:frontallobe P:ponsFTMbCeF:frontallobe Mb:midbrainT:temporallobe s:suprasellarcistern(碟鞍上腦池)Ce:cerebellumsTemporallobeparietallobeFTMbCeF:frontallobe Mb:miFQcMb3vTOF:frontallobe Sy:SylvianfissureT:temporallobe O:occipitallobe Mb:midbrain 3v:3rdventriclelv:lateralventricleCC:corpuscallosum(genu)Qc:quadrigeminalcistern(四疊體腦池)SyCCparietallobelvFQcMb3vTOF:frontallobe Sy:FPOSpCCF:frontallobe CC:corpuscallosumP:parietallobe Sp:spleniumofCCO:occipitallobelv:lateralventricles:sulcusparietallobelvssFPOSpCCF:frontallobe CC:corFPCiCSIfF:frontallobe If:interhemisphericP:parietallobe fissureCi:cingulum cs:centralsulcusCS:centrumsemiovalcsparietallobeFPCiCSIfF:frontallobe If:inpgctic:caudatenucleus尾狀核p:putamen被核g:globuspallidus蒼白核t:thalamus視丘 i:internalcapsule內(nèi)囊Basalgangliapgctic:caudatenucleus尾狀核plv:lateralventricle,frontalhorn3v:3rdventricleqc:quadrigeminalcisternSy:Sylvianfissureqcsf3vlvsc:suprasellarcisternaq:aqueductth:temporalhornoflateralventricle認識腦室及腦池scaqthSyth3vlvlv:lateralventricle,frontal頭部外傷頭部外傷ClassificationofHeadInjury腦外病灶(ExtracerebralLesions)腦內(nèi)病灶(IntracerebralLesions)其他傷害頭部外傷的後遺癥ClassificationofHeadInjury腦ExtracerebralLesionsEpiduralhematoma（硬腦膜上腔血腫）

Subduralhematoma(硬腦膜下腔血腫)Subduraleffusion(硬腦膜下積水）ExtracerebralLesionsEpidurCounter-coupInjuryThelesionisintheoppositesideofimpactsite30%incidence.Counter-coupInjuryThelesionScalpswellingEDH同側(cè)撞擊同側(cè)出血Counter-coupInjuryScalpswellingEDH同側(cè)撞擊Counter-cDura(硬腦膜)Subdural(硬腦膜下)Epidural(硬腦膜上)二.ExtracerebrallesionsEpiduralhematomaSubduralhematomaSubduraleffusionDuraSubduralEpidural二.ExtraceAcuteEpiduralHematomaFusiform(紡綞狀)orbiconvex(雙凸?fàn)?hyperdenselesion腫塊效應(yīng)強，可造成herniation(疝脫）Thehematomastillcontainsuncoagulatedblood,orstillhasactivebleeding.Round,stream-likefilling

defectsmaybeseeninthehematoma.需緊急處理AcuteEpiduralHematomaFusiforAcuteEpiduralHematomaAcuteEpiduralHematoma血塊內(nèi)含較灰區(qū)(箭)，代表正在出血中，有未凝結(jié)的血塊EDH：紡垂型，高濃度血塊頭皮腫(箭)，撞擊處血塊內(nèi)含較灰區(qū)(箭)，代表正EDH：紡垂型，高濃度血塊AcuteSubduralHematomaSickle-shape(鐮刀型)ornewlunarshape(新月型)ofhyperdenselesionoverlargeportionofcerebralhemisphereThehematomamayextendingintothesubduralspaceoftentorialregionorinterhemisphericfissureAcuteSubduralHematomaSickle-SDH：新月型(A.B)SDH可能在interhemisphericfissure內(nèi)(C)。SDH也可在tentorium下(D)(不要誤為腦內(nèi)出血)ABCDAcuteSubduralHematomaSDH：新月型(A.B)ABCDAcuteSubduralChronicSubduralhematomaShape:Semilunar,Fusiform,OvalshapeDensity:HyperdenseIsodenseHypodenseMixeddensityChronicSubduralhematomaShapeChronicSubduralHematomaChronicSubduralHematomaT1WIT2WImethemoglobinHyperintenseSubduralHematomaT1WIT2WImethemoglobinHyperinteSubduralEffusionOccurredinagedpatientorinfantDevelopedseveraldayslaterafteraheadinjuryOftenbilateralSpontaneouslyresorbedCraniotomy,V-Pshunt,meningitisalsomaycausesubduraleffusionSubduralEffusionOccurredinaSubduralEffusion4dayslater10dayslaterSubduralEffusion4dayslaterIntracerebralLesionsBraincontusion腦挫傷(edema,hemorrhage..)Subarachnoidhemorrhage(SAH)蜘蛛網(wǎng)膜下腔出血Intraventricularhemorrhage(IVH)腦室內(nèi)出血IntracerebralLesionsBrainconBrainContusionBrainedemamixedwithmultiplesmallhemorrhages腦水腫合併出血：最常見SolitaryhematomaCircumscribedareaofbrainedema局部腦水腫：很少見DiffusebrainedemaDiffuseaxonalinjury廣泛神經(jīng)軸受傷BrainContusionBrainedemamixBrainContusionBrainContusionPunctatehemorrhagesandedemasinthesubcorticalwhitematterofleftfrontallobe(A)andcorpuscallosum(B,C)ABCHeadinjury,GCS:3’

Diffuseaxonalinjury(DAI)PunctatehemorrhagesandedemaTraumaticSAHOftenassociateswithotherintracerebralorextracerebrallesionsCTfindings:Linearhighdensityinthesubarachnoidspaces(sulci,fissures,cisterns)MaycausehydrocephalusTraumaticSAHOftenassociatesTraumaticSAHTraumaticSAH112345521.SDH2.EDH3.Contusionhemorrhageandedema4.IVH(外傷性腦室內(nèi)出血)5.SAH(外傷性蜘蛛網(wǎng)膜下腔出血)

SAH：在腦溝、腦裂、腦池內(nèi)看到出血5112345521.SDH5OpenCranialInjurySkullfracturePneumoencephalusOpenCranialInjurySkullfr頭部外傷後遺癥廣泛腦萎縮(Diffusebrainatrophy)腦室積水(Hydrocephalus)腦組織軟化(Encephalomalacia)頭部外傷後遺癥廣泛腦萎縮(Diffusebraina86,5,14AcuteSDH&contusionhemorrhage86,5,16Post-craniotomy,theSDHdisappeared,dela