Vertebrobasilar InsufficiencyVertebral ArteryBasilar ArteryIntracranial AneurysmAneurysmAneurysm, InfectedAortic AneurysmCerebral AngiographyAneurysm, DissectingHeart AneurysmAortic Aneurysm, ThoracicEmbolization, TherapeuticIliac AneurysmCoronary AneurysmAngiography, Digital SubtractionBlood Vessel Prosthesis ImplantationTomography, X-Ray ComputedSubarachnoid HemorrhageAortic RuptureAneurysm, FalseBlood Vessel ProsthesisStentsSubclavian ArteryAorta, AbdominalVascular Surgical ProceduresVertebral Artery DissectionTreatment OutcomeEndovascular ProceduresAortographyAngiographyPosterior Cerebral ArterySurgical InstrumentsSubclavian Steal SyndromeVertigoRetrospective StudiesCarotid Artery, InternalMagnetic Resonance AngiographyFollow-Up StudiesPostoperative ComplicationsAngioplastyArterial Occlusive DiseasesIschemic Attack, TransientCarotid Artery DiseasesCircle of WillisDilatation, PathologicPetrous BoneInfarction, Posterior Cerebral ArteryIntracranial ArteriosclerosisIntracranial Embolism and ThrombosisImaging, Three-DimensionalCerebral ArteriesProsthesis DesignTrigeminal NeuralgiaAngioplasty, BalloonEchoencephalographyAnterior Cerebral ArteryCerebral RevascularizationCerebral Hemorrhage, TraumaticTime FactorsIliac ArteryNeurosurgical ProceduresMagnetic Resonance ImagingCerebrovascular CirculationEndoleakCerebrovascular DisordersTrochlear Nerve InjuriesAortitisBrachiocephalic TrunkPlatinumNerve Compression SyndromesCerebral InfarctionSubarachnoid Hemorrhage, TraumaticLabyrinthitisConstriction, PathologicRecurrencePolyethylene TerephthalatesSplenic ArteryCerebral HemorrhageHemifacial SpasmReoperationBalloon OcclusionUltrasonography, Doppler, TranscranialFatal OutcomeComaRenal ArterySinus of ValsalvaHematomaBlood Flow VelocityPancreatic ElastaseRisk FactorsProspective StudiesHeadache