Cranial FontanellesCranial SuturesCranial Fossa, AnteriorCranial Fossa, PosteriorDermoid CystCleidocranial DysplasiaSkullForeheadSubdural EffusionSkull NeoplasmsEchoencephalographyCerebral VentriclesInfant, NewbornPregnancy Trimester, SecondHydrocephalusMeningitis, BacterialSri LankaIntracranial PressureInfant, Newborn, DiseasesUltrasonography, PrenatalAbnormalities, MultipleTransducersGestational Age