Carotid StenosisEndarterectomy, CarotidCarotid ArteriesCarotid Artery DiseasesCarotid Artery, InternalDisease ProgressionCarotid Artery, CommonAortic Valve StenosisUltrasonography, Doppler, DuplexEndarterectomyIschemic Attack, TransientConstriction, PathologicStentsAngioplastyCoronary StenosisStrokeCerebrovascular DisordersCarotid BodyCarotid Artery, ExternalSpinal StenosisCarotid SinusTracheal StenosisUltrasonography, Doppler, TranscranialMagnetic Resonance AngiographyRisk FactorsAngiography, Digital SubtractionAmaurosis FugaxCerebral AngiographyAngioplasty, BalloonTreatment OutcomeCarotid Artery ThrombosisSeverity of Illness IndexProspective StudiesFollow-Up StudiesAngiographyPyloric StenosisMitral Valve StenosisIntracranial EmbolismUltrasonographyPulmonary Valve StenosisBlood Flow VelocityArterial Occlusive DiseasesUltrasonography, Doppler, ColorPredictive Value of TestsIntracranial ArteriosclerosisTime FactorsRetrospective StudiesAuscultationUltrasonography, DopplerRecurrenceBrain IschemiaAsymptomatic DiseasesCerebrovascular CirculationTomography, X-Ray ComputedArteriosclerosisSensitivity and SpecificityPostoperative ComplicationsTunica IntimaCarotid Artery InjuriesRisk AssessmentTunica MediaEmbolismCarotid Intima-Media ThicknessCerebral InfarctionObserver VariationRetinal Artery OcclusionDoppler EffectCalcinosisMiddle Cerebral ArteryHemodynamicsAtherosclerosisCranial Nerve InjuriesPlaque, AtheroscleroticPatient SelectionReproducibility of ResultsRenal Artery ObstructionIntracranial Embolism and ThrombosisLife TablesMagnetic Resonance ImagingBlood PressureAortic Stenosis, SubvalvularAcetazolamideCoronary AngiographyAortic Stenosis, SupravalvularVertebrobasilar InsufficiencyCollateral CirculationCohort StudiesCarotid Artery, Internal, DissectionContrast MediaCatheterizationPrognosisCoronary Artery DiseaseVascular PatencyCoronary Artery BypassCarotid Body TumorCoronary DiseaseBlood Vessel ProsthesisEmbolic Protection DevicesAortic ValveAge Factors