Middle Cerebral ArteryInfarction, Middle Cerebral ArteryCerebral ArteriesCerebrovascular CirculationBrain IschemiaCerebral InfarctionCerebral Arterial DiseasesUltrasonography, Doppler, TranscranialCerebral AngiographyIschemic Attack, TransientArterial Occlusive DiseasesAnterior Cerebral ArteryArteriesBlood Flow VelocityBrainPosterior Cerebral ArteryBrain EdemaReperfusionCarotid Artery, InternalIntracranial AneurysmIntracranial Embolism and ThrombosisBasilar ArteryStrokeNeuroprotective AgentsCarotid ArteriesDisease Models, AnimalTomography, X-Ray ComputedCerebrovascular DisordersBrain InfarctionTime FactorsMagnetic Resonance AngiographyCarotid Artery DiseasesCerebral RevascularizationRats, Sprague-DawleyTemporal ArteriesCarotid Artery, ExternalSubarachnoid HemorrhageMagnetic Resonance ImagingCerebral HemorrhageAneurysm, RupturedTreatment OutcomeIntracranial EmbolismInfarction, Anterior Cerebral ArteryUmbilical ArteriesConstrictionReperfusion InjuryCircle of WillisRats, WistarPulmonary ArteryCarotid StenosisRegional Blood FlowBlood PressureCarotid Artery ThrombosisUltrasonography, DopplerCerebral CortexVertebral ArteryCarotid Artery, CommonAngiography, Digital SubtractionIntracranial ArteriosclerosisCerebral VeinsNeurologic ExaminationTissue Plasminogen ActivatorPulsatile FlowFemoral ArteryPia MaterRenal ArteryVasoconstrictionLaser-Doppler FlowmetryIntracranial ThrombosisStentsCerebral PalsyVasodilationCatsEchoencephalographyBlood-Brain BarrierMesenteric ArteriesFibrinolytic AgentsConstriction, PathologicMoyamoya DiseaseCarbon DioxideIliac ArteryCraniotomyEar, MiddleCollateral CirculationSurgical InstrumentsAcute DiseaseHemodynamicsRats, Inbred SHRHypocapniaProspective StudiesUltrasonography, PrenatalVasospasm, IntracranialEmbolization, TherapeuticIntracranial PressureThrombolytic TherapyCoronary VesselsMuscle, Smooth, VascularPredictive Value of TestsRecovery of FunctionInjections, Intra-Arterial