Carotid StenosisEndarterectomy, CarotidCarotid ArteriesCarotid Artery DiseasesCarotid Artery, InternalCerebrovascular DisordersAsymptomatic DiseasesStrokeEndarterectomyIschemic Attack, TransientUltrasonography, Doppler, TranscranialAngioplastyStentsRisk FactorsUltrasonography, Doppler, DuplexAuscultationProspective StudiesFollow-Up StudiesTreatment OutcomeCarotid Artery, CommonRisk AssessmentAortic Valve StenosisTime FactorsMagnetic Resonance AngiographySeverity of Illness IndexConstriction, PathologicIntracranial ArteriosclerosisIntracranial EmbolismCoronary StenosisUltrasonographyCerebral AngiographyCarotid BodyArteriosclerosisCarotid Artery, ExternalSpinal StenosisPredictive Value of TestsPostoperative ComplicationsCarotid SinusTracheal StenosisRetrospective StudiesBrain IschemiaAngiography, Digital SubtractionAmaurosis FugaxAngioplasty, BalloonCarotid Artery ThrombosisCerebral InfarctionSensitivity and SpecificityAngiographyPlaque, AtheroscleroticTomography, X-Ray ComputedRecurrencePyloric StenosisMitral Valve StenosisPulmonary Valve StenosisPatient SelectionBlood Flow VelocityArterial Occlusive DiseasesUltrasonography, Doppler, ColorAtherosclerosisDisease ProgressionCoronary Artery BypassUltrasonography, DopplerCerebrovascular CirculationPrevalenceCarotid Artery InjuriesReproducibility of ResultsTunica IntimaEmbolismMagnetic Resonance ImagingTunica MediaAge FactorsCarotid Intima-Media ThicknessCohort StudiesRiskObserver VariationRetinal Artery OcclusionDoppler EffectMyocardial InfarctionMiddle Cerebral ArteryHemodynamicsProportional Hazards ModelsCranial Nerve InjuriesMultivariate AnalysisSex FactorsCalcinosisLogistic ModelsRenal Artery ObstructionIntracranial Embolism and ThrombosisLife TablesAortic Stenosis, SubvalvularAcetazolamideBlood PressureMass ScreeningAortic Stenosis, SupravalvularCoronary AngiographyVertebrobasilar InsufficiencyCollateral CirculationCarotid Artery, Internal, DissectionPractice Guidelines as TopicCatheterization