Vertebral ArteryVertebral Artery DissectionVertebrobasilar InsufficiencyArteriesBasilar ArterySubclavian ArteryCerebral AngiographySubclavian Steal SyndromeLateral Medullary SyndromeCarotid ArteriesMagnetic Resonance AngiographyAneurysm, DissectingCerebral ArteriesPulmonary ArteryAngiographyCarotid Artery, InternalIntracranial AneurysmCervical VertebraeEmbolization, TherapeuticAngiography, Digital SubtractionBrain Stem InfarctionsCervical AtlasArterial Occlusive DiseasesNeck InjuriesSubarachnoid HemorrhageCarotid Artery, Internal, DissectionAxisTomography, X-Ray ComputedRenal ArteryFemoral ArteryMesenteric ArteriesFibromuscular DysplasiaAneurysm, RupturedOccipital BoneCarotid Artery, CommonChild WelfareCarotid Artery DiseasesMammary ArteriesCerebellar DiseasesStentsTreatment OutcomeDisabled ChildrenAneurysm, FalseAtlanto-Axial JointChild BehaviorIliac ArteryCoronary Artery BypassConstriction, PathologicDoppler EffectPercussionVertigoFollow-Up StudiesCarotid Artery, ExternalRadial ArteryArteriovenous FistulaCerebral RevascularizationIntracranial ArteriosclerosisAneurysmUltrasonography, Doppler, ColorCerebral InfarctionMagnetic Resonance ImagingAtlanto-Occipital JointMastoidCerebrovascular CirculationUltrasonography, DopplerAngioplasty, BalloonNeckRetrospective StudiesWounds, StabUltrasonographyBrachial ArterySplenic ArteryRegional Blood FlowHemifacial SpasmCerebellumBrain IschemiaCerebrovascular DisordersHepatic ArteryUltrasonography, Doppler, DuplexHeadacheUltrasonography, Doppler, TranscranialInfarctionCarotid StenosisTime FactorsCoronary VesselsIntracranial Embolism and ThrombosisRisk FactorsProspective StudiesChild Health ServicesBalloon OcclusionCeliac ArteryChild RearingSpinal InjuriesBone ScrewsOphthalmic ArteryMesenteric Artery, SuperiorBrachiocephalic TrunkCarotid Artery InjuriesWounds, NonpenetratingAngioplasty