Vertebral Artery DissectionVertebral ArteryAneurysm, DissectingCarotid Artery, Internal, DissectionLateral Medullary SyndromeVertebrobasilar InsufficiencyCerebral AngiographyMagnetic Resonance AngiographyStrokeHeadacheChiropracticIntracranial AneurysmNeck PainSubarachnoid HemorrhageCoronary AneurysmTomography, X-Ray ComputedCerebral InfarctionMagnetic Resonance ImagingDissectionBasilar ArteryArteriesAngiographyCarotid Artery, InternalAnticoagulantsFibromuscular DysplasiaSubclavian ArteryHorner SyndromeNeck InjuriesFollow-Up StudiesSubclavian Steal SyndromeBrain Stem InfarctionsAngiography, Digital SubtractionCarotid Artery DiseasesCarotid ArteriesBrain IschemiaStentsTreatment OutcomeRenal ArteryRupture, SpontaneousEmbolization, TherapeuticMesenteric Artery, SuperiorPuerperal DisordersPulmonary ArteryCerebrovascular DisordersNeckCerebral ArteriesHypoglossal Nerve DiseasesAortic AneurysmAneurysm, RupturedInfarctionNeck DissectionArterial Occlusive DiseasesCervical VertebraeAneurysm, FalseCranial Nerve DiseasesRetrospective StudiesHematomaCeliac ArteryWounds, NonpenetratingCoronary Angiography