Infarction, Middle Cerebral ArteryMiddle Cerebral ArteryCerebral ArteriesCerebral InfarctionCerebrovascular CirculationBrain IschemiaMyocardial InfarctionCerebral Arterial DiseasesInfarctionUltrasonography, Doppler, TranscranialCerebral AngiographyIschemic Attack, TransientArterial Occlusive DiseasesAnterior Cerebral ArteryBrainBlood Flow VelocityArteriesPosterior Cerebral ArteryStrokeBrain EdemaReperfusionIntracranial Embolism and ThrombosisTime FactorsNeuroprotective AgentsBasilar ArteryDisease Models, AnimalCerebrovascular DisordersCarotid Artery, InternalTomography, X-Ray ComputedIntracranial AneurysmThrombolytic TherapyTreatment OutcomeMagnetic Resonance AngiographyMagnetic Resonance ImagingBrain InfarctionRats, Sprague-DawleyCerebral HemorrhageCerebral RevascularizationCarotid ArteriesInfarction, Anterior Cerebral ArteryTemporal ArteriesFibrinolytic AgentsSubarachnoid HemorrhageRats, WistarTissue Plasminogen ActivatorProspective StudiesReperfusion InjuryAcute DiseaseIntracranial EmbolismConstrictionBlood PressureUmbilical ArteriesCerebral CortexAneurysm, RupturedElectrocardiographyIntracranial ThrombosisCircle of WillisCarotid Artery DiseasesPredictive Value of TestsPulmonary ArteryNeurologic ExaminationRisk FactorsUltrasonography, DopplerRegional Blood FlowVertebral ArteryCoronary AngiographyCerebral VeinsIntracranial ArteriosclerosisCarotid Artery ThrombosisCollateral CirculationPia MaterLaser-Doppler FlowmetryAngioplasty, Balloon, CoronaryInfarction, Posterior Cerebral ArteryVasoconstrictionHemodynamicsCarotid StenosisCoronary Artery BypassRetrospective StudiesVasodilationEchoencephalographyRecovery of FunctionCatsCerebral PalsyBlood-Brain BarrierAngiography, Digital SubtractionCarotid Artery, ExternalFemoral ArteryStentsRenal ArteryVasospasm, IntracranialMesenteric ArteriesPulsatile FlowMoyamoya DiseaseTomography, Emission-Computed, Single-PhotonCarbon DioxideRats, Inbred SHRCoronary VesselsCraniotomyInjections, Intra-Arterial