Cerebral ArteriesMiddle Cerebral ArteryInfarction, Middle Cerebral ArteryCerebral InfarctionArteriesMyocardial InfarctionInfarctionCerebrovascular CirculationPosterior Cerebral ArteryAnterior Cerebral ArteryBrain IschemiaCerebral AngiographyBasilar ArteryCerebral Arterial DiseasesBrainCarotid ArteriesPulmonary ArteryIschemic Attack, TransientArterial Occlusive DiseasesTime FactorsCerebral PalsyInfarction, Anterior Cerebral ArteryCarotid Artery, InternalFemoral ArteryMesenteric ArteriesRenal ArteryUltrasonography, Doppler, TranscranialIntracranial Embolism and ThrombosisVertebral ArteryStrokeTomography, X-Ray ComputedBlood Flow VelocityCerebral HemorrhageIntracranial AneurysmCerebrovascular DisordersTreatment OutcomeInfarction, Posterior Cerebral ArteryCoronary Artery BypassBrain EdemaSubarachnoid HemorrhageMagnetic Resonance ImagingDisease Models, AnimalCarotid Artery DiseasesTemporal ArteriesMagnetic Resonance AngiographyCerebral VeinsCircle of WillisThrombolytic TherapyCoronary AngiographyVasoconstrictionReperfusionRats, Sprague-DawleyProspective StudiesCoronary VesselsCerebral RevascularizationRadial ArteryElectrocardiographyIliac ArteryBlood PressureRisk FactorsNeuroprotective AgentsMalaria, CerebralMammary ArteriesAngioplasty, Balloon, CoronaryUmbilical ArteriesCarotid Artery, CommonRats, WistarSubclavian ArteryRegional Blood FlowMuscle, Smooth, VascularVasodilationFibrinolytic AgentsAneurysm, RupturedAcute DiseasePredictive Value of TestsHemodynamicsStentsRetrospective StudiesCarotid StenosisVasospasm, IntracranialBrain InfarctionCoronary DiseaseCarotid Artery, ExternalSplenic ArteryOphthalmic ArteryBrachial ArteryVasodilator AgentsTissue Plasminogen ActivatorCarotid Artery ThrombosisPia MaterDogsHepatic ArteryTomography, Emission-Computed, Single-PhotonReperfusion InjuryIntracranial ThrombosisEndothelium, VascularConstrictionAngiography, Digital SubtractionSplenic InfarctionMesenteric Artery, Superior