Moyamoya DiseaseCerebral RevascularizationCerebral AngiographyMeningeal ArteriesTemporal ArteriesCerebral ArteriesMagnetic Resonance AngiographyMeningesCarotid Artery, InternalCerebral HemorrhageTreatment OutcomeCerebrovascular CirculationTomography, Emission-Computed, Single-PhotonMiddle Cerebral ArteryCircle of WillisPosterior Cerebral ArteryArterial Occlusive DiseasesPhotophobiaCollateral CirculationAnastomosis, SurgicalCerebral InfarctionIschemic Attack, TransientIntracranial HemorrhagesNeurosurgical ProceduresAngiography, Digital SubtractionIntracranial AneurysmCarotid Artery, External