EnterostomyMesenteric ArteriesMesenteric Artery, SuperiorPulmonary EmbolismMesenteric Artery, InferiorArterial Occlusive DiseasesArteriesEmbolismEmbolism, FatMesenteric Vascular OcclusionFemoral ArteryCerebral ArteriesRetinal Artery OcclusionIntracranial EmbolismPulmonary ArteryCeliac ArteryIschemiaSuperior Mesenteric Artery SyndromeIntracranial Embolism and ThrombosisEmbolism, ParadoxicalIliac ArteryAngiographyVasodilationEmbolectomyCarotid Artery, InternalCarotid ArteriesRenal ArteryTomography, X-Ray ComputedBrain IschemiaRegional Blood FlowInfarction, Middle Cerebral ArteryCerebral AngiographyTime FactorsVertebral ArteryTreatment OutcomeMuscle, Smooth, VascularVasoconstrictionCerebral Arterial DiseasesCollateral CirculationBasilar ArterySplanchnic CirculationVasodilator AgentsCerebral InfarctionCarotid Artery ThrombosisConstrictionEmbolism, Amniotic FluidPopliteal ArteryCarotid Artery DiseasesEndothelium, VascularMesenteric VeinsFibrinolytic AgentsThrombolytic TherapyThrombectomyCoronary OcclusionDogsMagnetic Resonance AngiographyConstriction, PathologicBalloon OcclusionThrombosisRats, WistarBlood PressureBiological FactorsVasoconstrictor AgentsStrokeHyperemiaLigationAcute DiseaseEmbolization, TherapeuticBrachial ArteryMiddle Cerebral Artery