Anterior Spinal Artery SyndromeVertebral ArteryBasilar ArteryInfarctionSpinal CordArteriesHypesthesiaVertebral Artery DissectionAngiographySpinal Cord Vascular DiseasesParaplegiaVertebrobasilar InsufficiencyMagnetic Resonance ImagingCerebral ArteriesSubarachnoid HemorrhageSpinePulmonary ArteryCarotid ArteriesCerebral AngiographySpinal Cord DiseasesSubclavian ArterySpinal FusionAneurysm, RupturedFemoral ArteryCarotid Artery, InternalRenal ArteryMesenteric ArteriesArterial Occlusive DiseasesSubclavian Steal SyndromeSpinal DiseasesMagnetic Resonance AngiographyTomography, X-Ray ComputedIntracranial AneurysmBrain Stem InfarctionsIliac ArteryCervical VertebraeSpinal Cord InjuriesCarotid Artery DiseasesCoronary Artery BypassMammary ArteriesTreatment OutcomeRadial ArteryEmbolization, TherapeuticScoliosisThoracic VertebraeThoracoscopesCarotid Artery, CommonAngiography, Digital SubtractionSpinal Cord IschemiaTuberculosis, SpinalAneurysm, DissectingKyphosisBrachial ArteryLateral Medullary SyndromeCoronary VesselsSplenic ArteryCerebrovascular CirculationVasodilationEndoscopesStentsHepatic ArteryMiddle Cerebral ArteryChylous AscitesRetinal Artery OcclusionDecompression, SurgicalLaminectomyVasoconstrictionCarotid Artery, ExternalCeliac ArteryCerebral InfarctionConstriction, PathologicCarotid Artery, Internal, DissectionOphthalmic ArteryBalloon OcclusionMesenteric Artery, SuperiorDogsMuscle, Smooth, VascularInternal FixatorsPostoperative ComplicationsBrain IschemiaRegional Blood FlowThoracoscopyRenal Artery ObstructionTime FactorsAneurysmDiskectomyThoracic ArteriesIntracranial ArteriosclerosisUmbilical ArteriesInfarction, Middle Cerebral ArteryTemporal ArteriesPopliteal ArteryCarotid StenosisAngioplasty, BalloonVasodilator AgentsIschemic Attack, TransientNeck InjuriesFibromuscular DysplasiaFollow-Up StudiesCervical Atlas