Carotid Artery DiseasesCarotid ArteriesCarotid StenosisCarotid Artery, InternalCarotid Artery, CommonEndarterectomy, CarotidArteriesCoronary Artery DiseaseCarotid Artery, ExternalCarotid Artery ThrombosisCerebral ArteriesArterial Occlusive DiseasesEndarterectomyUltrasonography, Doppler, DuplexPulmonary ArteryIschemic Attack, TransientCoronary Artery BypassStentsTime FactorsCoronary DiseaseMagnetic Resonance AngiographyFemoral ArteryRisk FactorsCerebrovascular DisordersAngiographyCircle of WillisUltrasonography, Doppler, TranscranialRenal ArteryCarotid Artery, Internal, DissectionAngioplastyAmaurosis FugaxCerebrovascular CirculationStrokeUltrasonographyCerebral AngiographyBasilar ArteryMesenteric ArteriesOphthalmic ArteryVertebral ArteryProspective StudiesCoronary AngiographyArteriosclerosisAngioplasty, BalloonTreatment OutcomeCarotid BodyTomography, X-Ray ComputedRetinal Artery OcclusionAngiography, Digital SubtractionTunica IntimaIntracranial ArteriosclerosisCarotid SinusIliac ArteryFollow-Up StudiesBlood Flow VelocitySubclavian ArteryCoronary VesselsRadial ArteryPredictive Value of TestsIntracranial EmbolismConstriction, PathologicAcetazolamideBrain IschemiaMammary ArteriesBrachial ArterySeverity of Illness IndexCarotid Artery InjuriesTunica MediaRetrospective StudiesAsymptomatic DiseasesIntracranial Embolism and ThrombosisCerebral InfarctionEmbolismRisk AssessmentBlood PressureCarotid Intima-Media ThicknessUltrasonography, Doppler, ColorSensitivity and SpecificityUltrasonography, DopplerModels, BiologicalPostoperative ComplicationsMiddle Cerebral ArterySplenic ArteryMuscle, Smooth, VascularCollateral CirculationEndothelium, VascularVasodilationHepatic ArteryKineticsTemporal ArteriesCeliac ArteryCoronary StenosisMyocardial InfarctionAneurysmReproducibility of ResultsAtherosclerosisCatheterizationRenal Artery ObstructionRegional Blood FlowMagnetic Resonance ImagingPatient Selection