Vertebral Artery DissectionVertebral ArteryAneurysm, DissectingCarotid Artery, Internal, DissectionStrokeLateral Medullary SyndromeVertebrobasilar InsufficiencyCerebral AngiographyBrain IschemiaCerebral Arterial DiseasesMagnetic Resonance AngiographyHeadacheIntracranial Arterial DiseasesChiropracticIntracranial AneurysmNeck PainSubarachnoid HemorrhageCerebral InfarctionIntracranial ThrombosisTomography, X-Ray ComputedCoronary AneurysmColoradoMagnetic Resonance ImagingSinus Thrombosis, IntracranialDissectionCerebral ArteriesBasilar ArteryFollow-Up StudiesMoyamoya DiseaseArteriesRisk FactorsAnticoagulantsThrombophiliaCarotid Artery, InternalAngiographyRetrospective StudiesFibromuscular DysplasiaInfant, NewbornSubclavian ArteryHorner SyndromeProspective StudiesNeck InjuriesCerebrovascular DisordersTreatment OutcomeFactor VSubclavian Steal SyndromeRecurrenceBrain Stem InfarctionsCarotid Artery DiseasesCohort StudiesAngiography, Digital SubtractionCarotid ArteriesStentsRenal ArteryIncidenceRupture, SpontaneousAcute DiseaseFibrinolytic AgentsEmbolization, TherapeuticNeckMesenteric Artery, SuperiorPuerperal DisordersPulmonary ArteryIschemic Attack, TransientThrombolytic TherapyTime FactorsHypoglossal Nerve DiseasesTissue Plasminogen ActivatorArterial Occlusive DiseasesAortic AneurysmCerebral HemorrhageAneurysm, RupturedBrain InfarctionInfarctionNeck DissectionIntracranial ArteriosclerosisInfarction, Middle Cerebral ArteryHematomaCervical VertebraeAneurysm, FalseCranial Nerve DiseasesCeliac ArteryCoronary AngiographyIntracranial Embolism and ThrombosisWounds, Nonpenetrating