Middle Cerebral ArteryInfarction, Middle Cerebral ArteryCerebral ArteriesCerebral InfarctionCerebrovascular CirculationBrain IschemiaCerebral Arterial DiseasesUltrasonography, Doppler, TranscranialCerebral AngiographyIschemic Attack, TransientArterial Occlusive DiseasesAnterior Cerebral ArteryArteriesBrainBlood Flow VelocityPosterior Cerebral ArteryMyocardial InfarctionBrain EdemaReperfusionInfarctionIntracranial Embolism and ThrombosisStrokeNeuroprotective AgentsBasilar ArteryCarotid Artery, InternalDisease Models, AnimalTime FactorsCerebrovascular DisordersIntracranial AneurysmTomography, X-Ray ComputedBrain InfarctionRats, Sprague-DawleyMagnetic Resonance AngiographyCarotid ArteriesCerebral HemorrhageCerebral RevascularizationMagnetic Resonance ImagingTemporal ArteriesInfarction, Anterior Cerebral ArterySubarachnoid HemorrhageTreatment OutcomeRats, WistarReperfusion InjuryConstrictionUmbilical ArteriesIntracranial EmbolismThrombolytic TherapyBlood PressureTissue Plasminogen ActivatorAneurysm, RupturedFibrinolytic AgentsCerebral CortexPulmonary ArteryCircle of WillisCarotid Artery DiseasesUltrasonography, DopplerVertebral ArteryNeurologic ExaminationAcute DiseaseRegional Blood FlowCerebral VeinsIntracranial ThrombosisPia MaterVasoconstrictionProspective StudiesLaser-Doppler FlowmetryCarotid Artery ThrombosisIntracranial ArteriosclerosisCerebral PalsyCarotid StenosisVasodilationCollateral CirculationCatsEchoencephalographyBlood-Brain BarrierFemoral ArteryRenal ArteryMesenteric ArteriesCarotid Artery, ExternalAngiography, Digital SubtractionPredictive Value of TestsInfarction, Posterior Cerebral ArteryPulsatile FlowCraniotomyHemodynamicsRecovery of FunctionEar, MiddleCarbon DioxideMoyamoya DiseaseVasospasm, IntracranialRats, Inbred SHRCoronary Artery BypassHypocapniaUltrasonography, PrenatalInjections, Intra-ArterialIntracranial PressureHemiplegiaRisk FactorsMuscle, Smooth, VascularRetrospective Studies