Cerebral InfarctionMiddle Cerebral ArteryCerebral ArteriesInfarction, Middle Cerebral ArteryCerebrovascular CirculationBrain IschemiaInfarctionMyocardial InfarctionCerebral Arterial DiseasesCerebral AngiographyIschemic Attack, TransientBrainIntracranial Embolism and ThrombosisUltrasonography, Doppler, TranscranialArterial Occlusive DiseasesAnterior Cerebral ArteryCerebrovascular DisordersStrokeCerebral HemorrhageBrain EdemaBlood Flow VelocityPosterior Cerebral ArteryTomography, X-Ray ComputedArteriesTime FactorsReperfusionSubarachnoid HemorrhageNeuroprotective AgentsDisease Models, AnimalMagnetic Resonance ImagingIntracranial AneurysmCarotid Artery, InternalBrain InfarctionBasilar ArteryMagnetic Resonance AngiographyTreatment OutcomeCerebral PalsyCerebral RevascularizationCarotid ArteriesRats, Sprague-DawleyAcute DiseaseThrombolytic TherapyIntracranial EmbolismProspective StudiesFibrinolytic AgentsIntracranial ThrombosisCerebral VeinsInfarction, Anterior Cerebral ArteryVasospasm, IntracranialBlood PressureRats, WistarNeurologic ExaminationReperfusion InjuryTissue Plasminogen ActivatorRisk FactorsTemporal ArteriesCarotid Artery DiseasesIntracranial ArteriosclerosisConstrictionCircle of WillisAneurysm, RupturedCarotid Artery ThrombosisHemiplegiaMoyamoya DiseasePredictive Value of TestsVertebral ArteryRegional Blood FlowCerebral CortexRetrospective StudiesUmbilical ArteriesCarotid StenosisElectrocardiographyCollateral CirculationMalaria, CerebralBlood-Brain BarrierTomography, Emission-Computed, Single-PhotonAngiography, Digital SubtractionPia MaterCraniotomyCoronary AngiographyHemodynamicsPulmonary ArteryUltrasonography, DopplerRecovery of FunctionLaser-Doppler FlowmetryVasoconstrictionInfarction, Posterior Cerebral ArteryCarotid Artery, ExternalDominance, CerebralCatsAngioplasty, Balloon, CoronaryLigationRats, Inbred SHRIntracranial PressureCarbon DioxideInjections, Intra-ArterialCoronary Artery BypassStentsAcetazolamidePrognosis