Carotid Artery DiseasesCarotid ArteriesCarotid StenosisCarotid Artery, InternalEndarterectomy, CarotidCarotid Artery, CommonCoronary Artery DiseaseCarotid Artery, ExternalCarotid Artery ThrombosisArteriesEndarterectomyUltrasonography, Doppler, DuplexArterial Occlusive DiseasesIschemic Attack, TransientStentsMagnetic Resonance AngiographyRisk FactorsCerebrovascular DisordersCoronary DiseaseAmaurosis FugaxCerebral ArteriesCircle of WillisUltrasonography, Doppler, TranscranialUltrasonographyCarotid Artery, Internal, DissectionStrokeAngioplastyCerebrovascular CirculationAngiographyCerebral AngiographyCoronary Artery BypassCarotid BodyProspective StudiesTunica IntimaArteriosclerosisAngioplasty, BalloonAngiography, Digital SubtractionTreatment OutcomeBlood Flow VelocityCarotid SinusIntracranial ArteriosclerosisTomography, X-Ray ComputedCoronary AngiographyRetinal Artery OcclusionAcetazolamideOphthalmic ArteryIntracranial EmbolismTunica MediaTime FactorsFollow-Up StudiesPredictive Value of TestsBrain IschemiaConstriction, PathologicAsymptomatic DiseasesFemoral ArteryPulmonary ArterySeverity of Illness IndexIntracranial Embolism and ThrombosisRetrospective StudiesEmbolismCarotid Intima-Media ThicknessCerebral InfarctionVertebral ArteryRisk AssessmentSensitivity and SpecificityUltrasonography, Doppler, ColorCarotid Artery InjuriesBasilar ArteryRenal ArteryBlood PressureCoronary VesselsCollateral CirculationPostoperative ComplicationsUltrasonography, DopplerMesenteric ArteriesSubclavian ArteryMammary ArteriesBrachial ArteryReproducibility of ResultsRadial ArteryIliac ArteryPatient SelectionMagnetic Resonance ImagingAtherosclerosisCatheterizationMuscle, Smooth, VascularCoronary StenosisEndothelium, VascularMyocardial InfarctionCalcinosisMiddle Cerebral ArteryAngina PectorisExercise TestAneurysmPrevalenceVasodilationRegional Blood FlowHemodynamicsLogistic ModelsTomography, Emission-Computed, Single-Photon