Vertebral Artery DissectionVertebral ArteryAneurysm, DissectingCarotid Artery, Internal, DissectionLateral Medullary SyndromeVertebrobasilar InsufficiencyCerebral AngiographyMagnetic Resonance AngiographyHeadacheDissectionChiropracticIntracranial AneurysmNeck PainSubarachnoid HemorrhageCoronary AneurysmTomography, X-Ray ComputedMagnetic Resonance ImagingCerebral InfarctionBasilar ArteryArteriesAngiographyFibromuscular DysplasiaCarotid Artery, InternalSubclavian ArteryNeck DissectionAnticoagulantsHorner SyndromeAortic AneurysmNeck InjuriesFollow-Up StudiesSubclavian Steal SyndromeBrain Stem InfarctionsStentsAngiography, Digital SubtractionRupture, SpontaneousCarotid Artery DiseasesRenal ArteryCarotid ArteriesMesenteric Artery, SuperiorTreatment OutcomeNeckEmbolization, TherapeuticPuerperal DisordersPulmonary ArteryHypoglossal Nerve DiseasesCerebral ArteriesAneurysm, RupturedHematomaAneurysm, FalseCranial Nerve DiseasesInfarctionCeliac ArteryAortic Aneurysm, ThoracicCervical VertebraeWounds, NonpenetratingArterial Occlusive DiseasesCoronary AngiographyRetrospective Studies