Celiac ArteryMesenteric Artery, SuperiorMesenteric ArteriesFemoral ArterySuperior Mesenteric Artery SyndromeMesenteric Vascular OcclusionArteriesMesenteric Artery, InferiorSplenic ArterySplanchnic CirculationRenal ArteryDuodenostomyAneurysmPulmonary ArteryConstriction, PathologicArterial Occlusive DiseasesHepatic ArteryAngiographyCarotid ArteriesTomography, X-Ray ComputedCerebral ArteriesIschemiaIliac ArteryBasilar ArteryAbdominal PainBlood Vessel Prosthesis ImplantationStentsVasodilationVasoconstrictionMesenteric VeinsMuscle, Smooth, VascularTreatment OutcomeVertebral ArteryReperfusion InjuryCoronary Artery BypassAorta, AbdominalRadial ArteryAneurysm, DissectingVisceraRegional Blood FlowMammary ArteriesAngioplasty, BalloonVascular Surgical ProceduresLigamentsSubclavian ArteryVenous CutdownAneurysm, FalseCarotid Artery, InternalVasoconstrictor AgentsTime FactorsVasodilator AgentsBrachial ArteryAortographyEndovascular ProceduresTuberculosis, CardiovascularEndothelium, VascularCarotid Artery DiseasesDuodenal ObstructionAortic Aneurysm, ThoracicUltrasonography, DopplerAnastomosis, SurgicalBlood Vessel ProsthesisCarotid Artery, CommonCoronary VesselsCeliac PlexusPopliteal ArteryBlood PressureRenal VeinsRats, WistarEmbolization, TherapeuticSplenic InfarctionLigationNorepinephrineVascular Access DevicesJejunostomyAortic Aneurysm, AbdominalRadiography, InterventionalRetrospective StudiesRats, Sprague-DawleyReplantationVascular PatencyAcetylcholinePhenylephrineOphthalmic ArteryNitric OxideRenal Artery ObstructionIntestinesUmbilical ArteriesMiddle Cerebral ArteryBiological FactorsDogsThoracic ArteriesFollow-Up StudiesUltrasonography, Doppler, DuplexMuscle ContractionPancreaticoduodenectomyTemporal ArteriesAneurysm, RupturedPortal VeinCollateral Circulation