Basilar ArteryIntracranial AneurysmEmbolization, TherapeuticAneurysm, RupturedPosterior Cerebral ArteryCerebral AngiographySubarachnoid HemorrhageAneurysmFenestration, LabyrinthAneurysm, InfectedAortic AneurysmArteriesVertebrobasilar InsufficiencyAneurysm, DissectingAortic Aneurysm, ThoracicCerebral ArteriesVertebral ArteryTreatment OutcomeHeart AneurysmTomography, X-Ray ComputedBlood Vessel Prosthesis ImplantationFontan ProcedureIliac AneurysmAngiography, Digital SubtractionRenal ArteryAortographyPulmonary ArteryCarotid Artery, InternalBlood Vessel ProsthesisCoronary AneurysmEndovascular ProceduresCarotid ArteriesAnterior Cerebral ArteryAneurysm, FalseBrain Stem InfarctionsStentsFemoral ArteryVasospasm, IntracranialAortic RuptureVascular Surgical ProceduresIliac ArteryAngiographyMesenteric ArteriesAorta, AbdominalCarotid Artery DiseasesVasodilationCystsMagnetic Resonance AngiographyFollow-Up StudiesProsthesis DesignRetrospective StudiesSplenic ArteryVentriculostomyVasoconstrictionSubclavian ArteryMiddle Cerebral ArteryMuscle, Smooth, VascularArachnoid CystsArterial Occlusive DiseasesCoronary Artery BypassPostoperative ComplicationsTime FactorsCircle of WillisNeurosurgical ProceduresMicrosurgeryCeliac ArteryCerebrovascular CirculationRadial ArteryDogsMesenteric Artery, SuperiorMammary ArteriesSurgical InstrumentsCarotid Artery, CommonVasodilator AgentsHepatic ArteryNeuroendoscopyEndothelium, VascularSerotoninImaging, Three-DimensionalBalloon OcclusionDilatation, PathologicBrachial ArteryOphthalmic ArteryPopliteal ArteryHeart Bypass, RightMicroscopy, Electron, ScanningCoronary VesselsRabbitsPapaverineReoperationHydrocephalusPotassium ChlorideTenotomyIntracranial Embolism and ThrombosisMagnetic Resonance ImagingTarlov CystsVasoconstrictor AgentsIntracranial Arteriovenous MalformationsApicoectomyMuscle Contraction