Dura MaterCerebral HemorrhageSkullStrokeSkull BaseCerebral InfarctionSubarachnoid HemorrhageHemorrhageCerebrovascular DisordersCerebral ArteriesParietal BonePia MaterIntracranial HemorrhagesCranial SuturesCerebral Amyloid AngiopathyArachnoidIntracranial Hemorrhage, HypertensiveBrain IschemiaMeningeal ArteriesTomography, X-Ray ComputedSkull NeoplasmsCapillary FragilityBrainSkull Base NeoplasmsCraniotomyCerebral AngiographyMeningesCerebrovascular CirculationCerebral Amyloid Angiopathy, FamilialMiddle Cerebral ArteryIntracranial Embolism and ThrombosisSkull FracturesMagnetic Resonance ImagingSumatriptanAmyloidosisLaminectomySubarachnoid SpaceCraniosynostosesTrigeminal NerveTissue Plasminogen ActivatorFatal OutcomeTime FactorsIschemic Attack, TransientIntracranial AneurysmHematomaCerebrospinal Fluid RhinorrheaEpidural SpaceRetinal HemorrhageTreatment OutcomeJapanHematoma, SubduralHemangioma, Cavernous, Central Nervous SystemMeningiomaCerebral Hemorrhage, TraumaticNeurosurgical ProceduresRisk FactorsFibrinolytic AgentsAphasia, WernickeIntracranial Arteriovenous MalformationsMeningeal NeoplasmsCerebral PalsyCreutzfeldt-Jakob SyndromeAcute DiseaseForamen MagnumCystatinsScalpBrain EdemaInfarction, Middle Cerebral ArteryHypertensionPostpartum HemorrhageRupture, SpontaneousPneumocephalusProspective StudiesThrombolytic TherapyGastrointestinal HemorrhageNeurologic ExaminationTissue TransplantationFrontal BonePostoperative ComplicationsAnticoagulantsStreptococcus anginosusSpinal CanalCalcitonin Gene-Related PeptideFollow-Up StudiesMeningitisCerebral VeinsCadaverRetrospective StudiesIsoindolesVitreous HemorrhageIntracranial EmbolismEye HemorrhageMoyamoya DiseaseIncidenceHematoma, Epidural, CranialTrigeminal GanglionMigraine DisordersBlood PressureAutonomic DysreflexiaVasospasm, Intracranial