Carotid ArteriesCarotid Artery DiseasesCarotid Artery, InternalCarotid StenosisCarotid Artery, ExternalCarotid Artery, CommonEndarterectomy, CarotidCarotid Artery ThrombosisIntracranial ArteriosclerosisAneurysmCarotid Artery, Internal, DissectionCerebral AngiographyCarotid BodyArteriesCarotid SinusCranial Nerve InjuriesIschemic Attack, TransientUltrasonography, Doppler, DuplexTunica MediaStentsArteriosclerosisUltrasonographyCerebrovascular DisordersMagnetic Resonance AngiographyArterial Occlusive DiseasesVertebral ArteryAngiographyStrokeTunica IntimaUltrasonography, Doppler, TranscranialAngioplasty, BalloonCerebrovascular CirculationAngioplastyCerebral ArteriesTomography, X-Ray ComputedCarotid Artery InjuriesCarotid Intima-Media ThicknessRisk FactorsCerebral InfarctionTreatment OutcomeBrain IschemiaNeckAngiography, Digital SubtractionEndarterectomyBlood Flow VelocityProspective StudiesRetrospective StudiesEmbolismBasilar ArteryVascular Surgical ProceduresBlood Vessel Prosthesis ImplantationCarotid-Cavernous Sinus FistulaFemoral ArteryPulmonary ArteryFollow-Up StudiesSubclavian ArteryCerebral RevascularizationIntracranial EmbolismRenal ArteryUltrasonography, Doppler, ColorVertebrobasilar InsufficiencyCarotid Body TumorMesenteric ArteriesCircle of WillisTime FactorsIntracranial AneurysmMiddle Cerebral ArteryJugular VeinsIntracranial Embolism and ThrombosisConstriction, PathologicBlood PressureAmaurosis FugaxCatheterizationCavernous SinusAuscultationUltrasonography, DopplerTemporal ArteriesMuscle, Smooth, VascularCoronary Artery BypassRegional Blood FlowEmbolization, TherapeuticOphthalmic ArteryRadial ArteryAtherosclerosisBrachial ArteryMagnetic Resonance ImagingIliac ArteryRetinal Artery OcclusionDoppler EffectPostoperative ComplicationsPredictive Value of TestsAneurysm, DissectingMammary ArteriesVertebral Artery DissectionCerebral Arterial DiseasesBrachiocephalic TrunkAneurysm, FalseSeverity of Illness IndexLigationEndothelium, Vascular