Middle Cerebral ArteryInfarction, Middle Cerebral ArteryCerebral ArteriesCerebral InfarctionMyocardial InfarctionCerebrovascular CirculationBrain IschemiaInfarctionCerebral Arterial DiseasesTime FactorsUltrasonography, Doppler, TranscranialMagnetic Resonance ImagingTomography, X-Ray ComputedCerebral AngiographyIschemic Attack, TransientDiffusion Magnetic Resonance ImagingAcute DiseaseArterial Occlusive DiseasesAnterior Cerebral ArteryBrainArteriesBlood Flow VelocityPosterior Cerebral ArteryStrokeBrain EdemaReperfusionIntracranial Embolism and ThrombosisBasilar ArteryNeuroprotective AgentsDisease Models, AnimalCerebrovascular DisordersCarotid Artery, InternalIntracranial AneurysmThrombolytic TherapyTreatment OutcomeMagnetic Resonance AngiographyBrain InfarctionRats, Sprague-DawleyCerebral HemorrhageInfarction, Anterior Cerebral ArteryCarotid ArteriesCerebral RevascularizationTemporal ArteriesSubarachnoid HemorrhageFibrinolytic AgentsRats, WistarTissue Plasminogen ActivatorProspective StudiesReperfusion InjuryIntracranial EmbolismConstrictionBlood PressureUmbilical ArteriesElectrocardiographyCerebral CortexAneurysm, RupturedPulmonary ArteryCarotid Artery DiseasesCircle of WillisPredictive Value of TestsNeurologic ExaminationRisk FactorsIntracranial ThrombosisVertebral ArteryRegional Blood FlowCoronary AngiographyUltrasonography, DopplerCerebral VeinsAngioplasty, Balloon, CoronaryIntracranial ArteriosclerosisCarotid Artery ThrombosisVasoconstrictionCollateral CirculationPia MaterHemodynamicsLaser-Doppler FlowmetryInfarction, Posterior Cerebral ArteryCarotid StenosisCoronary Artery BypassRetrospective StudiesVasodilationCerebral PalsyRecovery of FunctionEchoencephalographyCatsFemoral ArteryBlood-Brain BarrierRenal ArteryAngiography, Digital SubtractionCarotid Artery, ExternalMesenteric ArteriesStentsVasospasm, IntracranialCoronary VesselsPulsatile FlowMoyamoya DiseaseTomography, Emission-Computed, Single-PhotonRats, Inbred SHRCarbon DioxideCraniotomy