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孤立性大脑凸面蛛网膜下腔出血病因课件1孤立性大脑凸面蛛网膜下腔出血病因课件2病因病因3孤立性大脑凸面蛛网膜下腔出血病因课件4孤立性大脑凸面蛛网膜下腔出血病因课件5孤立性大脑凸面蛛网膜下腔出血病因课件6孤立性大脑凸面蛛网膜下腔出血病因课件7VascularMalformationsSimilarly,cavernomasarerarelydescribedasacauseofSAH.However,superficialandleptomeningealcavernomasmaybethesourceofcSAH.VascularMalformations8RCVSRCVS9RCVSRCVS10孤立性大脑凸面蛛网膜下腔出血病因课件11孤立性大脑凸面蛛网膜下腔出血病因课件12

VasculitidesVasculiti13

VasculitidesVasculiti14InfectiousOriginCorticalSAHmaybeseenafterruptureofinfectiousaneurysms(causedbyinfectiveendocarditis,meningitis,orrarelycrypto-genically)(Fig5).Headacheisdiffuseandvague,ratherthanthetypicalexcruciating

极痛苦headacheofnoninfectiousaneurysmalSAH.Usually,therearealsogeneralsymptoms(eg,anorexia,weightloss,malaise,orfever)InfectiousOriginCorticalSAH15Ininfectiveendocarditis,MRimagingmightshowassociatedlesions(ischemic,microbleeds,brainabscesses).DSAmightbeusedforthediagnosisofdistalarteriallesionsandfortherapeuticpurposes.InfectiousOriginIninfectiveendocarditis,MR16InfectiousOriginInfectiousOrigin17InfectiousOriginInfectiousOrigin18MoyamoyaAccordingtoarecentclassification,patientswithwellrecognizedassociatedconditions(eg,sicklecelldisease，neurofibromatosistype1,cranialtherapeuticirradiation,andDownsyndrome)areconsideredashavingaMoyamoyasyndrome,whilepatientswithnoknownassociatedriskfactorsaresaidtohaveMoyamoyadiseaseMoyamoya19MoyamoyaMoyamoya20High-GradeStenosisHigh-GradeStenosis21Fig6.Pialvasodilation.A,AxialGRET2imageshowsaleftfrontalsulcalSAH(blackarrowhead),possiblylocatedinthe“watershed”territorybetweentheanteriorandthemiddlecerebralarteries.

B,Axialmaximum-intensity-projectionreconstructionofCTAshowsanasymmetryofthedistalarteries,infavorofleftpialvasodilation.C,Frontalprojectionof3DangiographyoftheleftcarotidarteryrevealsaseverestenosisattheoriginoftheM2branch(whitearrowhead).Fig6.Pialvasodilation.A,A22Fig.1ACTdemonstratesaleftinferiortemporalSAH.BThisisconfirmedonMRI.CSeveralareasofrestricteddiffusionareseenintheleftMCAregion.DAngiographydemonstratestightbilateralinternalcarotidstenosesFig.1ACTdemonstratesale23孤立性大脑凸面蛛网膜下腔出血病因课件24posteriorreversibleencephalopathysyndromeposteriorreversibleencephalo25孤立性大脑凸面蛛网膜下腔出血病因课件26cerebralamyloidangiopathycerebralamyloidangiopathy27孤立性大脑凸面蛛网膜下腔出血病因课件28cerebralamyloidangiopathycerebralamyloidangiopathy29A,AxialbrainCTscanshowsasubtleleftrolandichyperattenuationfavoringminimalSAH(whitearrowhead).BandC,AxialGRET2imagesshowlefttemporallobarhemorrhage,multiplemicrobleeds,andcorticalhemosiderosis.D,AxialFLAIRimageobtainedafter7monthsshowsanewasymptomaticSAHinaleftparietalsulcus(whitearrowhead),whichwaspreviouslynormal(seeB)A,AxialbrainCTscanshowsa30孤立性大脑凸面蛛网膜下腔出血病因课件31谢谢！谢谢！32孤立性大脑凸面蛛网膜下腔出血病因课件33孤立性大脑凸面蛛网膜下腔出血病因课件34病因病因35孤立性大脑凸面蛛网膜下腔出血病因课件36孤立性大脑凸面蛛网膜下腔出血病因课件37孤立性大脑凸面蛛网膜下腔出血病因课件38孤立性大脑凸面蛛网膜下腔出血病因课件39VascularMalformationsSimilarly,cavernomasarerarelydescribedasacauseofSAH.However,superficialandleptomeningealcavernomasmaybethesourceofcSAH.VascularMalformations40RCVSRCVS41RCVSRCVS42孤立性大脑凸面蛛网膜下腔出血病因课件43孤立性大脑凸面蛛网膜下腔出血病因课件44

VasculitidesVasculiti45

VasculitidesVasculiti46InfectiousOriginCorticalSAHmaybeseenafterruptureofinfectiousaneurysms(causedbyinfectiveendocarditis,meningitis,orrarelycrypto-genically)(Fig5).Headacheisdiffuseandvague,ratherthanthetypicalexcruciating

极痛苦headacheofnoninfectiousaneurysmalSAH.Usually,therearealsogeneralsymptoms(eg,anorexia,weightloss,malaise,orfever)InfectiousOriginCorticalSAH47Ininfectiveendocarditis,MRimagingmightshowassociatedlesions(ischemic,microbleeds,brainabscesses).DSAmightbeusedforthediagnosisofdistalarteriallesionsandfortherapeuticpurposes.InfectiousOriginIninfectiveendocarditis,MR48InfectiousOriginInfectiousOrigin49InfectiousOriginInfectiousOrigin50MoyamoyaAccordingtoarecentclassification,patientswithwellrecognizedassociatedconditions(eg,sicklecelldisease，neurofibromatosistype1,cranialtherapeuticirradiation,andDownsyndrome)areconsideredashavingaMoyamoyasyndrome,whilepatientswithnoknownassociatedriskfactorsaresaidtohaveMoyamoyadiseaseMoyamoya51MoyamoyaMoyamoya52High-GradeStenosisHigh-GradeStenosis53Fig6.Pialvasodilation.A,AxialGRET2imageshowsaleftfrontalsulcalSAH(blackarrowhead),possiblylocatedinthe“watershed”territorybetweentheanteriorandthemiddlecerebralarteries.

B,Axialmaximum-intensity-projectionreconstructionofCTAshowsanasymmetryofthedistalarteries,infavorofleftpialvasodilation.C,Frontalprojectionof3DangiographyoftheleftcarotidarteryrevealsaseverestenosisattheoriginoftheM2branch(whitearrowhead).Fig6.Pialvasodilation.A,A54Fig.1ACTdemonstratesaleftinferiortemporalSAH.BThisisconfirmedonMRI.CSeveralareasofrestricteddiffusionareseenintheleftMCAregion.DAngiographydemonstratestightbilateralinternalcarotidstenosesFig.1ACTdemonstratesale55孤立性大脑凸面蛛网膜下腔出血病因课件56posteriorreversibleencephalopa

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