IleumArteriesPulmonary ArteryCarotid ArteriesCerebral ArteriesRenal ArteryFemoral ArteryMesenteric ArteriesBasilar ArteryIliac ArteryVertebral ArteryCoronary Artery BypassRadial ArteryMammary ArteriesCarotid Artery, InternalSubclavian ArteryCarotid Artery DiseasesSplenic ArteryBrachial ArteryHepatic ArteryCarotid Artery, CommonCoronary VesselsCeliac ArteryMesenteric Artery, SuperiorOphthalmic ArteryUmbilical ArteriesMiddle Cerebral ArteryRenal Artery ObstructionThoracic ArteriesTemporal ArteriesBronchial ArteriesPopliteal ArteryUlnar ArteryGuinea PigsUterine ArteryCoronary AngiographyCarotid Artery, ExternalVasodilationMuscle, Smooth, VascularMuscle ContractionCarotid Artery InjuriesArterial Occlusive DiseasesVasoconstrictionAngiographyCoronary DiseaseMuscle, SmoothInfarction, Middle Cerebral ArteryAxillary ArteryEndothelium, VascularTime FactorsTreatment OutcomeTomography, X-Ray ComputedMyenteric PlexusRetinal Artery OcclusionIleal DiseasesSwineAcetylcholineStentsCarotid Artery ThrombosisVasodilator AgentsMeningeal ArteriesIleitisAneurysmCarotid StenosisRegional Blood FlowIntestine, SmallDogsBlood PressureIntestinal MucosaCerebral AngiographyRabbitsMagnetic Resonance AngiographyMaxillary ArteryVasoconstrictor AgentsAngioplasty, BalloonCoronary CirculationCarotid Artery, Internal, DissectionFollow-Up StudiesHemodynamicsConstriction, PathologicCoronary Artery Bypass, Off-PumpInternal Mammary-Coronary Artery AnastomosisCoronary StenosisVascular PatencyDose-Response Relationship, DrugMyocardial InfarctionVertebral Artery DissectionProspective StudiesEmbolization, TherapeuticUltrasonography, DopplerMesenteric Artery, InferiorRisk FactorsRats, Sprague-DawleyRats, WistarIleal NeoplasmsRetrospective StudiesMuscle RelaxationCatheterizationAngiography, Digital SubtractionCerebrovascular Circulation