VeinsBlood CirculationFemoral VeinPortal VeinBlood Flow VelocityUltrasonography, PrenatalCerebral ArteriesCerebral InfarctionCerebrovascular CirculationCerebral PalsyMiddle Cerebral ArteryCerebral AngiographyBrainInfarction, Middle Cerebral ArteryMalaria, CerebralCerebral VeinsBrain IschemiaExtracorporeal CirculationCerebral HemorrhagePulmonary CirculationCollateral CirculationIschemic Attack, TransientAnterior Cerebral ArteryPosterior Cerebral ArteryMagnetic Resonance ImagingRegional Blood FlowBlood Circulation TimeSubarachnoid HemorrhageCerebral Amyloid AngiopathyCerebral VentriclesEnterohepatic CirculationBrain EdemaCerebrovascular DisordersTime FactorsCoronary CirculationIntracranial Embolism and ThrombosisBlood PressureIntracranial AneurysmIntracranial PressureBrain DiseasesPlacental CirculationOxygenCerebral RevascularizationRats, Sprague-DawleyDominance, CerebralCarbon DioxideDisease Models, AnimalBasilar ArterySplanchnic CirculationVasospasm, IntracranialHemodynamicsTomography, X-Ray ComputedCerebrumPia MaterHypoxia, BrainStrokeBlood VolumeVascular ResistanceXenon RadioisotopesBlood-Brain BarrierMagnetic Resonance AngiographyNeuroprotective AgentsLiver CirculationMicrocirculationReperfusionLaser-Doppler FlowmetryDogsSpectroscopy, Near-InfraredRats, WistarArterial Occlusive DiseasesBrain InfarctionTomography, Emission-ComputedIntracranial ThrombosisVasoconstrictionOxygen ConsumptionCircle of WillisHypothermia, InducedAcetazolamideTechnetium Tc 99m ExametazimeNeuronsArteriolesIntracranial Arteriovenous MalformationsTreatment OutcomeHypercapniaPartial PressurePapioHomeostasisPregnancyInfarction, Posterior Cerebral ArteryBrain ChemistryHeart ArrestAneurysm, RupturedCatsXenonInfarction, Anterior Cerebral ArteryBlood Gas AnalysisReperfusion InjuryOximesRats, Inbred StrainsElectroencephalography