Middle Cerebral ArteryInfarction, Middle Cerebral ArteryCerebral ArteriesMicronucleus TestsCerebrovascular CirculationBrain IschemiaCerebral InfarctionCircle of WillisCerebral Arterial DiseasesUltrasonography, Doppler, TranscranialCerebral AngiographyIschemic Attack, TransientArterial Occlusive DiseasesAnterior Cerebral ArteryArteriesBrainBlood Flow VelocityPosterior Cerebral ArteryBrain EdemaReperfusionIntracranial Embolism and ThrombosisStrokeBasilar ArteryNeuroprotective AgentsCarotid Artery, InternalIntracranial AneurysmDisease Models, AnimalBrain InfarctionCerebrovascular DisordersTomography, X-Ray ComputedMagnetic Resonance AngiographyCarotid ArteriesCerebral RevascularizationRats, Sprague-DawleyTemporal ArteriesTime FactorsCerebral HemorrhageSubarachnoid HemorrhageMagnetic Resonance ImagingInfarction, Anterior Cerebral ArteryUmbilical ArteriesConstrictionReperfusion InjuryRats, WistarIntracranial EmbolismAneurysm, RupturedPulmonary ArteryCerebral CortexBlood PressureVertebral ArteryUltrasonography, DopplerCarotid Artery DiseasesRegional Blood FlowCerebral VeinsPia MaterNeurologic ExaminationTissue Plasminogen ActivatorVasoconstrictionLaser-Doppler FlowmetryIntracranial ThrombosisCarotid Artery ThrombosisTreatment OutcomeCerebral PalsyIntracranial ArteriosclerosisEchoencephalographyCatsCarotid StenosisCollateral CirculationVasodilationCarotid Artery, ExternalAngiography, Digital SubtractionBlood-Brain BarrierMesenteric ArteriesRenal ArteryFemoral ArteryFibrinolytic AgentsMoyamoya DiseasePulsatile FlowCraniotomyEar, MiddleAcute DiseaseCarbon DioxideRats, Inbred SHRHypocapniaUltrasonography, PrenatalVasospasm, IntracranialIntracranial PressureThrombolytic TherapyRecovery of FunctionInjections, Intra-ArterialDNA, CircularMuscle, Smooth, VascularInfarction, Posterior Cerebral ArteryPapioManagement Quality CirclesHemodynamicsAcetazolamideNeuronsRadial ArterySurgical Instruments