Carotid Artery, InternalCarotid Artery DiseasesCerebral AngiographyCarotid Artery ThrombosisCarotid StenosisArterial Occlusive DiseasesCarotid Artery, ExternalCarotid ArteriesCerebral RevascularizationCollateral CirculationCerebrovascular CirculationCircle of WillisEndarterectomy, CarotidCarotid Artery, CommonBrain IschemiaOphthalmic ArteryIschemic Attack, TransientMagnetic Resonance AngiographyCerebral ArteriesCarotid Artery, Internal, DissectionAngiography, Digital SubtractionCerebral InfarctionIntracranial Embolism and ThrombosisCerebrovascular DisordersRetinal Artery OcclusionStrokeUltrasonography, Doppler, TranscranialBlood Flow VelocityAngiographyTomography, X-Ray ComputedTemporal ArteriesStentsGerbillinaeUltrasonographyUltrasonography, Doppler, DuplexIntracranial AneurysmUltrasonography, Doppler, ColorInfarction, Middle Cerebral ArteryEndarterectomyBrainBalloon OcclusionVertebral ArteryDyskinesiasArteriesTreatment OutcomeMiddle Cerebral ArteryCavernous SinusTime FactorsEmbolization, TherapeuticAneurysmMagnetic Resonance ImagingAngioplasty, BalloonFollow-Up StudiesCarotid Artery InjuriesBasilar ArteryProspective StudiesCerebral Arterial DiseasesThrombolytic TherapyReperfusionTunica IntimaConstrictionRegional Blood FlowIntracranial EmbolismCarotid-Cavernous Sinus FistulaFibromuscular DysplasiaEpistaxisTunica MediaHemodynamicsAmaurosis FugaxAngioplastyMoyamoya DiseasePetrous BoneLigationIntracranial ArteriosclerosisAneurysm, RupturedDisease Models, AnimalCarotid BodyArteriosclerosisInjections, Intra-ArterialRetrospective StudiesCatheterizationConstriction, PathologicBlood PressureNeuroprotective AgentsAnterior Cerebral ArteryCranial Nerve DiseasesVertebrobasilar InsufficiencyFemoral ArteryHorner SyndromeCarotid SinusPostoperative ComplicationsBrain EdemaEndovascular ProceduresRisk FactorsAneurysm, FalsePredictive Value of Tests