Carotid StenosisEndarterectomy, CarotidCarotid ArteriesCarotid Artery DiseasesCarotid Artery, InternalCarotid Artery, CommonAortic Valve StenosisUltrasonography, Doppler, DuplexEndarterectomyIschemic Attack, TransientConstriction, PathologicStentsAngioplastyCoronary StenosisStrokeCerebrovascular DisordersCarotid BodyCarotid Artery, ExternalSpinal StenosisCarotid SinusTracheal StenosisUltrasonography, Doppler, TranscranialMagnetic Resonance AngiographyAngiography, Digital SubtractionAmaurosis FugaxCerebral AngiographyAngioplasty, BalloonCarotid Artery ThrombosisRisk FactorsAngiographyPyloric StenosisSeverity of Illness IndexIntracranial EmbolismMitral Valve StenosisUltrasonographyProspective StudiesPulmonary Valve StenosisTreatment OutcomeFollow-Up StudiesBlood Flow VelocityArterial Occlusive DiseasesUltrasonography, Doppler, ColorIntracranial ArteriosclerosisAuscultationPredictive Value of TestsUltrasonography, DopplerBrain IschemiaCerebrovascular CirculationAsymptomatic DiseasesRecurrenceRetrospective StudiesTomography, X-Ray ComputedCarotid Artery InjuriesPostoperative ComplicationsArteriosclerosisSensitivity and SpecificityTunica IntimaRisk AssessmentTime FactorsEmbolismTunica MediaCarotid Intima-Media ThicknessCerebral InfarctionObserver VariationRetinal Artery OcclusionDoppler EffectMiddle Cerebral ArteryCranial Nerve InjuriesHemodynamicsPatient SelectionCalcinosisRenal Artery ObstructionPlaque, AtheroscleroticIntracranial Embolism and ThrombosisReproducibility of ResultsAortic Stenosis, SubvalvularAcetazolamideAtherosclerosisLife TablesAortic Stenosis, SupravalvularBlood PressureVertebrobasilar InsufficiencyCoronary AngiographyMagnetic Resonance ImagingCollateral CirculationCarotid Artery, Internal, DissectionCatheterizationContrast MediaVascular PatencyCarotid Body TumorCoronary Artery BypassBlood Vessel ProsthesisEmbolic Protection DevicesCoronary DiseaseDisease ProgressionLaryngostenosisAortic ValveRadiology, InterventionalSystoleCoronary Artery Disease