Cerebral VentriculitisCoagulation Protein DisordersIntracranial AneurysmAneurysmCerebral VentriclesCerebral AngiographyAneurysm, RupturedEncephalitisHydrocephalusCerebral ArteriesEmbolization, TherapeuticVentriculostomySubarachnoid HemorrhageSpiruridaAneurysm, InfectedCerebrospinal Fluid ShuntsCerebral VentriculographyAortic AneurysmSurgical InstrumentsCerebral InfarctionVentriculoperitoneal ShuntMeningitisTreatment OutcomeIncidenceCerebrovascular CirculationMeningitis, FungalAngiography, Digital SubtractionMiddle Cerebral ArteryTomography, X-Ray ComputedCerebral PalsyBrain AbscessAneurysm, DissectingMeningitis, BacterialAortic Aneurysm, ThoracicEndovascular ProceduresHeart AneurysmCerebrospinal FluidTuberculosis, MeningealRetrospective StudiesPlatinumAnterior Cerebral ArteryInjections, IntraventricularNeurosurgical ProceduresCerebral VeinsCerebral HemorrhageBrainFollow-Up Studies