Cerebral VentriculitisIntracranial AneurysmAneurysmCerebral VentriclesCerebral AngiographyAneurysm, RupturedCerebral ArteriesEncephalitisHydrocephalusEmbolization, TherapeuticVentriculostomySubarachnoid HemorrhageSpiruridaAneurysm, InfectedCerebral VentriculographyCerebrospinal Fluid ShuntsCerebral InfarctionSurgical InstrumentsVentriculoperitoneal ShuntMeningitisMiddle Cerebral ArteryAortic AneurysmCerebrovascular CirculationMeningitis, FungalAngiography, Digital SubtractionCerebral PalsyBrain AbscessMeningitis, BacterialAortic Aneurysm, ThoracicHeart AneurysmCerebrospinal FluidTomography, X-Ray ComputedEndovascular ProceduresInfarction, Middle Cerebral ArteryTuberculosis, MeningealAneurysm, DissectingAnterior Cerebral ArteryInjections, IntraventricularPlatinumBrainCerebral VeinsNeurosurgical Procedures