Cerebral VentriculitisCerebral VentriclesHydrocephalusEncephalitisVentriculostomyInjections, IntraventricularCerebral VentriculographyCerebrospinal Fluid ShuntsSpiruridaVentriculoperitoneal ShuntMeningitisMeningitis, FungalBrain AbscessCerebrospinal FluidMeningitis, BacterialCerebral HemorrhageTuberculosis, MeningealCerebral Ventricle NeoplasmsInfant, Premature, DiseasesInfusions, IntraventricularLateral VentriclesIntracranial HemorrhagesAnti-Bacterial AgentsNeuroendoscopyInfant, PrematureEchoencephalographyInfant, NewbornLeukomalacia, PeriventricularThird VentricleNeurocytomaMeningeal Neoplasms