Moyamoya DiseaseCerebral RevascularizationCerebral AngiographyCerebral ArteriesArteriesTemporal ArteriesMeningeal ArteriesCarotid Artery, InternalMagnetic Resonance AngiographyMeningesMiddle Cerebral ArteryCarotid ArteriesCerebrovascular CirculationCerebral HemorrhageArterial Occlusive DiseasesTomography, Emission-Computed, Single-PhotonCircle of WillisPosterior Cerebral ArteryCarotid Artery, ExternalPhotophobiaPulmonary ArteryCerebral InfarctionAnastomosis, SurgicalIschemic Attack, TransientAngiography, Digital SubtractionCollateral CirculationIntracranial AneurysmIntracranial HemorrhagesTomography, X-Ray ComputedAngiographyNeurosurgical ProceduresBrain IschemiaBasilar Artery