Cerebral VentriculitisVasospasm, IntracranialSubarachnoid HemorrhageAutopsyBasilar ArteryCerebral VentriclesCerebral ArteriesEncephalitisHydrocephalusVentriculostomyIschemic Attack, TransientCerebral AngiographyCisterna MagnaSpiruridaCerebrovascular CirculationCerebral VentriculographyCerebrospinal Fluid ShuntsCerebral InfarctionIntracranial AneurysmPapaverineVentriculoperitoneal ShuntCerebrospinal FluidMeningitisMiddle Cerebral ArteryCoronary VasospasmInjections, IntraventricularMeningitis, FungalAneurysm, RupturedCerebral PalsyBrain AbscessBrainNimodipineMeningitis, BacterialTuberculosis, MeningealBrain IschemiaUltrasonography, Doppler, Transcranial