Vertebral ArteryVertebral Artery DissectionVertebrobasilar InsufficiencyAneurysm, DissectingVeinsDissectionArteriesBasilar ArterySubclavian ArteryCerebral AngiographySubclavian Steal SyndromeCarotid Artery, Internal, DissectionLateral Medullary SyndromeSaphenous VeinMagnetic Resonance AngiographyCarotid ArteriesAngiographyCarotid Artery, InternalIntracranial AneurysmCerebral ArteriesPulmonary ArteryPortal VeinTomography, X-Ray ComputedNeck DissectionEmbolization, TherapeuticAngiography, Digital SubtractionCervical VertebraeBrain Stem InfarctionsArterial Occlusive DiseasesVaricose VeinsNeck InjuriesCervical AtlasFemoral ArteryJugular VeinsSubarachnoid HemorrhageAortic AneurysmRenal ArteryFibromuscular DysplasiaStentsFemoral VeinAxisAneurysm, RupturedMesenteric ArteriesCarotid Artery, CommonTreatment OutcomePulmonary VeinsCarotid Artery DiseasesMammary ArteriesOccipital BoneAneurysm, FalseConstriction, PathologicCerebellar DiseasesIliac ArteryCoronary Artery BypassArteriovenous FistulaUltrasonography, Doppler, ColorAtlanto-Axial JointFollow-Up StudiesAneurysmRadial ArteryNeckDoppler EffectCerebral RevascularizationVertigoCarotid Artery, ExternalPercussionUltrasonography, Doppler, DuplexCerebral InfarctionUltrasonography, DopplerIntracranial ArteriosclerosisMesenteric VeinsMagnetic Resonance ImagingRenal VeinsRetrospective StudiesAngioplasty, BalloonAortic Aneurysm, ThoracicBlood Vessel Prosthesis ImplantationCerebrovascular CirculationMastoidAtlanto-Occipital JointBlood Vessel ProsthesisRegional Blood FlowIliac VeinSplenic ArteryVascular Surgical ProceduresHepatic ArteryAortographyTime FactorsUmbilical VeinsMesenteric Artery, SuperiorUltrasonographyCadaverCoronary VesselsWounds, StabBrachial ArteryEndovascular ProceduresCeliac ArteryBrain IschemiaCerebrovascular DisordersAorta, Thoracic