Vertebral ArteryVertebral Artery DissectionVertebrobasilar InsufficiencyIntracranial AneurysmVascular HeadachesCerebral AngiographyAneurysmAneurysm, RupturedEmbolization, TherapeuticSubarachnoid HemorrhageCoronary AneurysmAneurysm, InfectedIliac AneurysmArteriesAneurysm, DissectingSplenic ArterySubclavian ArteryBasilar ArteryTomography, X-Ray ComputedAortic AneurysmAngiography, Digital SubtractionCarotid Artery, InternalAngiographyBlood Vessel Prosthesis ImplantationAneurysm, FalseRenal ArteryAortic Aneurysm, ThoracicHeart AneurysmVascular Surgical ProceduresSubclavian Steal SyndromeMagnetic Resonance AngiographyTreatment OutcomeStentsEndovascular ProceduresBlood Vessel ProsthesisCerebral ArteriesCarotid Artery DiseasesPopliteal ArteryIliac ArteryCarotid Artery, Internal, DissectionLateral Medullary SyndromeCarotid ArteriesPulmonary ArteryCeliac ArteryMesenteric Artery, SuperiorFemoral ArterySurgical InstrumentsArterial Occlusive DiseasesHepatic ArteryAnterior Cerebral ArteryRupture, SpontaneousFibromuscular DysplasiaMucocutaneous Lymph Node SyndromeArteriovenous FistulaFollow-Up StudiesBronchial ArteriesCerebral RevascularizationAortographyRetrospective StudiesCervical VertebraeCarotid Artery, CommonBrain Stem InfarctionsAorta, AbdominalCervical AtlasBalloon OcclusionAortic RupturePosterior Cerebral ArteryNeurosurgical ProceduresNeck InjuriesCircle of WillisAngioplastyConstriction, PathologicAxisVascular PatencyPostoperative ComplicationsCerebellar DiseasesMesenteric ArteriesOphthalmic ArteryCarotid Artery, ExternalMagnetic Resonance ImagingOculomotor Nerve DiseasesOccipital BoneTime FactorsCoronary Artery BypassMammary Arteries