Infarction, Middle Cerebral ArteryMiddle Cerebral ArteryCerebral ArteriesCerebral InfarctionStrokeCerebral AngiographyBrain IschemiaCerebrovascular CirculationTomography, X-Ray ComputedCerebral Arterial DiseasesMagnetic Resonance ImagingUltrasonography, Doppler, TranscranialIschemic Attack, TransientArterial Occlusive DiseasesAnterior Cerebral ArteryBrainArteriesBlood Flow VelocityPosterior Cerebral ArteryCerebrovascular DisordersReperfusionBrain EdemaIntracranial Embolism and ThrombosisTreatment OutcomeNeuroprotective AgentsBasilar ArteryCarotid Artery, InternalDisease Models, AnimalIntracranial AneurysmBrain InfarctionTime FactorsThrombolytic TherapyCerebral HemorrhageMagnetic Resonance AngiographyCarotid ArteriesRats, Sprague-DawleyCerebral RevascularizationTemporal ArteriesAcute DiseaseSubarachnoid HemorrhageInfarction, Anterior Cerebral ArteryMyocardial InfarctionIntracranial EmbolismReperfusion InjuryInfarctionUmbilical ArteriesConstrictionRats, WistarTissue Plasminogen ActivatorBlood PressureCerebral CortexFibrinolytic AgentsAneurysm, RupturedPulmonary ArteryCircle of WillisCarotid Artery DiseasesNeurologic ExaminationIntracranial ThrombosisUltrasonography, DopplerVertebral ArteryRegional Blood FlowCerebral VeinsPia MaterLaser-Doppler FlowmetryCarotid Artery ThrombosisIntracranial ArteriosclerosisVasoconstrictionCarotid StenosisProspective StudiesCerebral PalsyVasodilationBlood-Brain BarrierRecovery of FunctionCatsEchoencephalographyCarotid Artery, ExternalFemoral ArteryRenal ArteryMesenteric ArteriesCollateral CirculationAngiography, Digital SubtractionPulsatile FlowCraniotomyEar, MiddleCarbon DioxidePredictive Value of TestsInfarction, Posterior Cerebral ArteryRats, Inbred SHRMoyamoya DiseaseVasospasm, IntracranialHemiplegiaHypocapniaHemodynamicsUltrasonography, PrenatalInjections, Intra-ArterialIntracranial PressureMuscle, Smooth, VascularRisk FactorsCoronary Artery BypassConstriction, Pathologic