Retinal Artery OcclusionSyndromeArteriesInfarction, Middle Cerebral ArteryArterial Occlusive DiseasesCerebral ArteriesBrain IschemiaPulmonary ArteryCarotid Artery, InternalFemoral ArteryBasilar ArteryCoronary OcclusionCarotid ArteriesCerebral InfarctionRenal ArteryVertebral ArteryCerebral Arterial DiseasesCarotid Artery DiseasesCerebrovascular CirculationIliac ArteryBalloon OcclusionMesenteric ArteriesIschemic Attack, TransientMiddle Cerebral ArteryReperfusionTime FactorsDisease Models, AnimalConstrictionCerebral AngiographyCoronary VesselsCollateral CirculationRetinal Vein OcclusionTreatment OutcomeVertebrobasilar InsufficiencyCoronary Artery BypassDown SyndromeSubclavian ArteryMetabolic Syndrome XDogsRadial ArteryCarotid Artery ThrombosisBrainNeuroprotective AgentsStrokeAngiographyOphthalmic ArteryMammary ArteriesCarotid Artery, CommonTomography, X-Ray ComputedCarotid StenosisMyocardial InfarctionCeliac ArteryRats, Sprague-DawleyCoronary DiseaseCarotid Artery, ExternalReperfusion InjuryHemodynamicsSplenic ArteryCoronary CirculationMesenteric Vascular OcclusionMesenteric Artery, SuperiorEmbolization, TherapeuticStentsLigationMagnetic Resonance AngiographyBrain EdemaRegional Blood FlowBrain InfarctionUlnar ArteryBrachial ArteryRenal Artery ObstructionBlood PressureCerebral RevascularizationPopliteal ArteryRats, WistarHepatic ArteryCoronary AngiographyConstriction, PathologicFollow-Up StudiesDental OcclusionTemporal ArteriesNephrotic SyndromeRetrospective StudiesMyocardial IschemiaVascular PatencyAngiography, Digital SubtractionMyocardial Reperfusion InjuryAngioplasty, BalloonSjogren's SyndromeIntracranial AneurysmInjections, Intra-ArterialMagnetic Resonance ImagingSubclavian Steal SyndromeAcute DiseaseProspective StudiesFibrinolytic AgentsIschemiaThrombolytic TherapyTissue Plasminogen ActivatorVasodilation