Carotid Artery DiseasesCarotid ArteriesAtherosclerosisArteriosclerosisCarotid StenosisCarotid Artery, InternalCoronary Artery DiseaseEndarterectomy, CarotidCarotid Artery, CommonRisk FactorsVascular DiseasesCarotid Artery, ExternalPlaque, AtheroscleroticHomocysteineCarotid Artery ThrombosisEndothelium, VascularArteriesFollow-Up StudiesHyperlipidemiasArterial Occlusive DiseasesEndarterectomyUltrasonography, Doppler, DuplexMuscle, Smooth, VascularCardiovascular DiseasesIschemic Attack, TransientDiabetes Mellitus, Type 2Cerebrovascular DisordersStentsCoronary DiseaseMagnetic Resonance AngiographyStrokeCholesterolCerebral ArteriesPeripheral Vascular DiseasesAmaurosis FugaxUltrasonographyCircle of WillisAngioplastyAngiographyUltrasonography, Doppler, TranscranialCerebrovascular CirculationTunica IntimaCarotid Artery, Internal, DissectionProspective StudiesCoronary Artery BypassCerebral AngiographyCarotid BodyAngioplasty, BalloonTreatment OutcomeBlood Flow VelocityIntracranial ArteriosclerosisAngiography, Digital SubtractionCarotid SinusTomography, X-Ray ComputedCoronary AngiographyRetinal Artery OcclusionTunica MediaTime FactorsFemoral ArteryPredictive Value of TestsAcetazolamidePulmonary ArteryIntracranial EmbolismOphthalmic ArteryBrain IschemiaConstriction, PathologicSeverity of Illness IndexRetrospective StudiesAsymptomatic DiseasesRisk AssessmentIntracranial Embolism and ThrombosisCarotid Intima-Media ThicknessCerebral InfarctionEmbolismCarotid Artery InjuriesVertebral ArteryBlood PressureSensitivity and SpecificityUltrasonography, Doppler, ColorRenal ArteryCoronary VesselsCollateral CirculationPostoperative ComplicationsBasilar ArteryUltrasonography, DopplerBrachial ArteryMesenteric ArteriesSubclavian ArteryIliac ArteryRadial ArteryPatient SelectionMagnetic Resonance ImagingReproducibility of ResultsMyocardial InfarctionCalcinosisCatheterizationMammary ArteriesPrevalenceVasodilationPeripheral Arterial Disease