Vertebral ArteryVertebral Artery DissectionVertebrobasilar InsufficiencyAneurysm, DissectingDissectionArteriesBasilar ArterySubclavian ArteryCerebral AngiographySubclavian Steal SyndromeCarotid Artery, Internal, DissectionLateral Medullary SyndromeMagnetic Resonance AngiographyCarotid ArteriesAngiographyCarotid Artery, InternalIntracranial AneurysmCerebral ArteriesPulmonary ArteryNeck DissectionTomography, X-Ray ComputedAngiography, Digital SubtractionCervical VertebraeBrain Stem InfarctionsEmbolization, TherapeuticArterial Occlusive DiseasesNeck InjuriesCervical AtlasSubarachnoid HemorrhageAortic AneurysmFibromuscular DysplasiaRenal ArteryFemoral ArteryAxisStentsAneurysm, RupturedMesenteric ArteriesCarotid Artery, CommonCarotid Artery DiseasesOccipital BoneMammary ArteriesTreatment OutcomeCerebellar DiseasesAneurysm, FalseIliac ArteryCoronary Artery BypassConstriction, PathologicAtlanto-Axial JointNeckDoppler EffectVertigoRadial ArteryCerebral RevascularizationCarotid Artery, ExternalPercussionArteriovenous FistulaCerebral InfarctionAneurysmIntracranial ArteriosclerosisFollow-Up StudiesUltrasonography, Doppler, ColorAngioplasty, BalloonMagnetic Resonance ImagingAortic Aneurysm, ThoracicUltrasonography, DopplerMastoidAtlanto-Occipital JointCerebrovascular CirculationRetrospective StudiesAortographyBlood Vessel Prosthesis ImplantationSplenic ArteryMesenteric Artery, SuperiorUltrasonographyWounds, StabRegional Blood FlowBrachial ArteryBlood Vessel ProsthesisCoronary VesselsAorta, ThoracicBrain IschemiaCeliac ArteryEndovascular ProceduresCadaverHepatic ArteryUltrasonography, Doppler, DuplexCerebrovascular DisordersInfarctionHemifacial SpasmHeadacheCerebellumCarotid StenosisUltrasonography, Doppler, TranscranialTime FactorsIntracranial Embolism and ThrombosisRupture, SpontaneousAngioplastyLymph Node ExcisionBalloon OcclusionVascular Surgical Procedures