Vertebral ArteryVertebral Artery DissectionVertebrobasilar InsufficiencyArteriesBasilar ArterySubclavian ArteryCerebral AngiographySubclavian Steal SyndromeLateral Medullary SyndromeCarotid ArteriesMagnetic Resonance AngiographyAneurysm, DissectingCerebral ArteriesAngiographyPulmonary ArteryIntracranial AneurysmCarotid Artery, InternalCervical VertebraeEmbolization, TherapeuticAngiography, Digital SubtractionBrain Stem InfarctionsCervical AtlasArterial Occlusive DiseasesNeck InjuriesTomography, X-Ray ComputedSubarachnoid HemorrhageAxisCarotid Artery, Internal, DissectionRenal ArteryFemoral ArteryAneurysm, RupturedMesenteric ArteriesFibromuscular DysplasiaOccipital BoneCarotid Artery, CommonTreatment OutcomeCarotid Artery DiseasesMammary ArteriesStentsCerebellar DiseasesAneurysm, FalseDisease ManagementAtlanto-Axial JointIliac ArteryCoronary Artery BypassConstriction, PathologicDoppler EffectPercussionArteriovenous FistulaVertigoCerebral RevascularizationCarotid Artery, ExternalRadial ArteryAneurysmIntracranial ArteriosclerosisUltrasonography, Doppler, ColorFollow-Up StudiesCerebral InfarctionMagnetic Resonance ImagingAtlanto-Occipital JointMastoidAngioplasty, BalloonCerebrovascular CirculationUltrasonography, DopplerWounds, StabRetrospective StudiesNeckUltrasonographySplenic ArteryBrachial ArteryRegional Blood FlowHemifacial SpasmCerebrovascular DisordersUltrasonography, Doppler, DuplexBrain IschemiaHepatic ArteryCerebellumCarotid StenosisInfarctionHeadacheUltrasonography, Doppler, TranscranialTime FactorsWounds, NonpenetratingCoronary VesselsIntracranial Embolism and ThrombosisBalloon OcclusionCeliac ArterySpinal InjuriesBone ScrewsMesenteric Artery, SuperiorAngioplastyOphthalmic ArteryBrachiocephalic TrunkWounds, PenetratingCarotid Artery InjuriesStrokeCase ManagementRupture, SpontaneousProspective StudiesBlood Flow Velocity