Carotid Artery DiseasesCarotid ArteriesCarotid Artery, InternalRadial ArteryCarotid StenosisCarotid Artery, ExternalCarotid Artery, CommonIntracranial AneurysmAneurysmEndarterectomy, CarotidCerebral AngiographyIntracranial ArteriosclerosisCarotid Artery ThrombosisCranial Nerve InjuriesCarotid Artery, Internal, DissectionStentsMagnetic Resonance AngiographyCerebral ArteriesArteriosclerosisEmbolization, TherapeuticCerebrovascular DisordersTunica MediaIschemic Attack, TransientAneurysm, RupturedArteriesUltrasonographyCarotid BodyAngiography, Digital SubtractionCarotid SinusTreatment OutcomeUltrasonography, Doppler, DuplexAngiographyTomography, X-Ray ComputedStrokeArterial Occlusive DiseasesTunica IntimaCerebrovascular CirculationVertebral ArteryRisk FactorsSubarachnoid HemorrhageEndarterectomyAngioplasty, BalloonRetrospective StudiesCarotid-Cavernous Sinus FistulaCerebral InfarctionBlood Flow VelocityAneurysm, InfectedAngioplastyBrain IschemiaBasilar ArteryBlood Vessel Prosthesis ImplantationSurgical InstrumentsCarotid Artery InjuriesVascular Surgical ProceduresFollow-Up StudiesMiddle Cerebral ArteryCarotid Intima-Media ThicknessIntracranial EmbolismAortic AneurysmProspective StudiesCircle of WillisUltrasonography, Doppler, TranscranialFemoral ArteryNeckModels, CardiovascularTime FactorsPulmonary ArteryAneurysm, DissectingCarotid Body TumorRenal ArteryCerebral RevascularizationEndovascular ProceduresPostoperative ComplicationsBrachiocephalic TrunkMagnetic Resonance ImagingSubclavian ArteryConstriction, PathologicImaging, Three-DimensionalBlood PressureAortic Aneurysm, ThoracicUltrasonography, Doppler, ColorIliac ArteryCatheterizationBlood Vessel ProsthesisRegional Blood FlowAneurysm, FalseNeurosurgical ProceduresHeart AneurysmRecurrenceOphthalmic ArteryHemodynamicsMesenteric ArteriesEmbolismLigationPredictive Value of TestsIntracranial Embolism and ThrombosisBrainAtherosclerosisAnterior Cerebral ArterySensitivity and Specificity