Carotid StenosisCarotid ArteriesCarotid Artery, InternalCarotid Artery DiseasesEndarterectomy, CarotidCarotid Artery, CommonCarotid Artery, ExternalCarotid Artery ThrombosisUltrasonography, Doppler, DuplexArteriesStentsAngiography, Digital SubtractionRenal Artery ObstructionMagnetic Resonance AngiographyAngiographyAngioplasty, BalloonAngioplastyCerebral AngiographyConstriction, PathologicIschemic Attack, TransientCarotid Artery, Internal, DissectionArterial Occlusive DiseasesCoronary StenosisCerebrovascular DisordersEndarterectomyUltrasonography, Doppler, ColorCarotid BodyRenal ArteryCerebral ArteriesStrokeTunica IntimaBlood Flow VelocityCarotid SinusUltrasonography, Doppler, TranscranialArteriosclerosisPulmonary ArteryIntracranial EmbolismRisk FactorsTomography, X-Ray ComputedTreatment OutcomeProspective StudiesTunica MediaCerebrovascular CirculationAmaurosis FugaxUltrasonography, DopplerFemoral ArteryBrain IschemiaVertebral ArteryAortic Valve StenosisSeverity of Illness IndexSensitivity and SpecificityUltrasonographyPredictive Value of TestsFollow-Up StudiesIntracranial ArteriosclerosisOphthalmic ArteryCarotid Intima-Media ThicknessBasilar ArteryCoronary Artery BypassCarotid Artery InjuriesTime FactorsIntracranial Embolism and ThrombosisRetrospective StudiesCerebral InfarctionSubclavian ArteryIliac ArteryPostoperative ComplicationsHypertension, RenovascularMesenteric ArteriesMiddle Cerebral ArteryCatheterizationCoronary AngiographyBlood PressureAtherosclerosisObserver VariationAsymptomatic DiseasesCalcinosisHemodynamicsDoppler EffectRetinal Artery OcclusionRecurrenceRisk AssessmentCoronary VesselsEmbolismSpinal StenosisRadial ArteryPlaque, AtheroscleroticReproducibility of ResultsVertebrobasilar InsufficiencyCerebral RevascularizationEmbolic Protection DevicesPulmonary Valve StenosisCollateral CirculationBrachial ArteryAneurysmTracheal StenosisMuscle, Smooth, VascularMammary ArteriesCoronary DiseaseVascular Patency