Ischemic Attack, TransientCerebral ArteriesStrokeCerebral InfarctionCerebrovascular DisordersBrain IschemiaCerebrovascular CirculationCerebral AngiographyMiddle Cerebral ArteryCarotid StenosisCerebral PalsyBrainCerebral HemorrhageCarotid Artery DiseasesEndarterectomy, CarotidTime FactorsInfarction, Middle Cerebral ArteryIntracranial Embolism and ThrombosisRisk FactorsRecurrenceFollow-Up StudiesEndarterectomyMalaria, CerebralProspective StudiesCerebral VeinsMagnetic Resonance ImagingMoyamoya DiseaseTomography, X-Ray ComputedCarotid ArteriesIntracranial ArteriosclerosisIntracranial Arterial DiseasesNeurologyIntracranial EmbolismMagnetic Resonance Angiography