Vertebral ArteryVertebral Artery DissectionVertebrobasilar InsufficiencyArteriesBasilar ArteryCerebral AngiographySubclavian ArteryLateral Medullary SyndromeSubclavian Steal SyndromeIntracranial AneurysmAneurysm, DissectingCarotid ArteriesMagnetic Resonance AngiographyCerebral ArteriesPulmonary ArteryCarotid Artery, InternalAngiographyEmbolization, TherapeuticCervical VertebraeAneurysm, RupturedAngiography, Digital SubtractionBrain Stem InfarctionsCerebellar DiseasesSubarachnoid HemorrhageCervical AtlasArterial Occlusive DiseasesNeck InjuriesTomography, X-Ray ComputedCarotid Artery, Internal, DissectionAxisRenal ArteryFemoral Artery