EmbolismIntracranial Embolism and ThrombosisMesenteric ArteriesMesenteric Artery, SuperiorAneurysmIntracranial AneurysmMesenteric Artery, InferiorAneurysm, InfectedArteriesAortic AneurysmAortic Aneurysm, ThoracicMesenteric Vascular OcclusionHeart AneurysmEmbolization, TherapeuticAneurysm, DissectingCeliac ArteryCerebral ArteriesCerebral AngiographyRenal ArteryIliac AneurysmBlood Vessel Prosthesis ImplantationSuperior Mesenteric Artery SyndromeTomography, X-Ray ComputedPulmonary ArteryFemoral ArteryAneurysm, FalseCoronary AneurysmBasilar ArteryTreatment OutcomeIliac ArteryCarotid Artery, InternalCarotid ArteriesAorta, AbdominalBlood Vessel ProsthesisArterial Occlusive DiseasesAngiographyStentsVasodilationMuscle, Smooth, VascularBalloon OcclusionAngiography, Digital SubtractionSplenic ArteryVertebral ArteryVascular Surgical ProceduresVasoconstrictionSplanchnic CirculationEndovascular ProceduresAortic RuptureCarotid Artery DiseasesAortographyRetinal Artery OcclusionTime FactorsMesenteric VeinsSubarachnoid HemorrhageCoronary OcclusionVasodilator AgentsVasoconstrictor AgentsSubclavian ArteryBiological FactorsHepatic ArteryEndothelium, VascularCoronary Artery BypassFollow-Up StudiesRetinal Vein OcclusionRetrospective StudiesPostoperative ComplicationsRats, WistarSurgical InstrumentsNorepinephrineCoronary VesselsRadial ArteryBlood PressureCarotid Artery, CommonRats, Sprague-DawleyDogsMammary ArteriesInfarction, Middle Cerebral ArteryPhenylephrinePopliteal ArteryRegional Blood FlowMiddle Cerebral ArteryAcetylcholineMyographyConstriction, PathologicOphthalmic ArteryVascular PatencyProsthesis DesignBrachial ArteryLigationConstrictionAngioplastyDisease Models, AnimalDuodenostomyAorta, ThoracicIschemiaRats, Inbred WKYDose-Response Relationship, DrugNitric OxideMuscle ContractionBrain Ischemia