Carotid Artery, InternalCarotid StenosisCarotid Artery, Internal, DissectionCarotid Artery DiseasesMoyamoya DiseaseCerebral AngiographyCarotid ArteriesCarotid Artery, ExternalArterial Occlusive DiseasesCarotid Artery ThrombosisEndarterectomy, CarotidCarotid Artery, CommonCerebrovascular CirculationCerebral RevascularizationCollateral CirculationTomography, X-Ray ComputedIschemic Attack, TransientBrain IschemiaCircle of WillisMagnetic Resonance AngiographyInternal Mammary-Coronary Artery AnastomosisOphthalmic ArteryAngiography, Digital SubtractionCerebral ArteriesMammary ArteriesCerebrovascular DisordersStrokeCerebral InfarctionUltrasonography, Doppler, TranscranialUltrasonography, Doppler, DuplexStentsIntracranial Embolism and ThrombosisBlood Flow VelocityAngiographyRetinal Artery OcclusionTreatment OutcomeEndarterectomyUltrasonographyUltrasonography, Doppler, ColorFollow-Up StudiesTemporal ArteriesGerbillinaeIntracranial AneurysmBrainMiddle Cerebral ArteryAngioplasty, BalloonInfarction, Middle Cerebral ArteryAngioplastyBalloon OcclusionVertebral ArteryTime FactorsThoracic ArteriesConstriction, PathologicProspective StudiesJugular VeinsArteriesPostoperative ComplicationsCarotid BodyDyskinesiasSternumIntracranial EmbolismCarotid Artery InjuriesAmaurosis FugaxCavernous SinusMagnetic Resonance ImagingTunica IntimaCarotid SinusCoronary Artery BypassEmbolization, TherapeuticAneurysmIntracranial ArteriosclerosisRisk FactorsTunica MediaRetrospective StudiesRegional Blood FlowHemodynamicsArteriosclerosisBasilar ArteryCerebral Arterial DiseasesSurgical Wound InfectionConstrictionPredictive Value of TestsAortic Valve StenosisThrombolytic TherapyReperfusionRecurrenceUltrasonography, DopplerSeverity of Illness IndexCatheterizationBlood PressureCarotid Intima-Media ThicknessFibromuscular DysplasiaVertebrobasilar InsufficiencyCoronary StenosisEpistaxisCarotid-Cavernous Sinus FistulaSensitivity and SpecificityLigationAuscultationAcetazolamide