Carotid Artery DiseasesCarotid StenosisCarotid ArteriesEndarterectomy, CarotidCarotid Artery, InternalCarotid Artery, CommonCarotid Artery, ExternalCoronary Artery DiseaseEndarterectomyCarotid Artery ThrombosisUltrasonography, Doppler, DuplexCerebrovascular DisordersAsymptomatic DiseasesIschemic Attack, TransientStrokeRisk FactorsCarotid BodyUltrasonography, Doppler, TranscranialAngioplastyStentsAuscultationArteriesCarotid SinusArterial Occlusive DiseasesMagnetic Resonance AngiographyArteriosclerosisProspective StudiesUltrasonographyIntracranial ArteriosclerosisCerebral AngiographyTreatment OutcomeCarotid Artery, Internal, DissectionIntracranial EmbolismFollow-Up StudiesTunica IntimaCoronary Artery BypassAmaurosis FugaxCerebral ArteriesPredictive Value of TestsCoronary DiseaseCircle of WillisSeverity of Illness IndexCerebrovascular CirculationAngiographyTime FactorsRisk AssessmentTomography, X-Ray ComputedBrain IschemiaTunica MediaCarotid Intima-Media ThicknessCarotid Artery InjuriesCerebral InfarctionAngioplasty, BalloonPostoperative ComplicationsAngiography, Digital SubtractionRetrospective StudiesBlood Flow VelocitySensitivity and SpecificityRetinal Artery OcclusionAcetazolamideCoronary AngiographyAtherosclerosisConstriction, PathologicOphthalmic ArteryPlaque, AtheroscleroticFemoral ArteryIntracranial Embolism and ThrombosisPatient SelectionEmbolismPulmonary ArteryVertebral ArteryBlood PressureUltrasonography, Doppler, ColorPrevalenceUltrasonography, DopplerReproducibility of ResultsMagnetic Resonance ImagingBasilar ArteryCollateral CirculationRenal ArteryMyocardial InfarctionCoronary VesselsCarotid Body TumorSubclavian ArteryLogistic ModelsMesenteric ArteriesBrachial ArteryDisease ProgressionRecurrenceCatheterizationRadial ArteryMuscle, Smooth, VascularIliac ArteryCohort StudiesCalcinosisEndothelium, VascularAge FactorsAneurysmMiddle Cerebral ArteryRegional Blood Flow