Cerebral ArteriesMiddle Cerebral ArteryInfarction, Middle Cerebral ArteryArteriesPosterior Cerebral ArteryCerebral InfarctionCerebrovascular CirculationAnterior Cerebral ArteryBrain IschemiaCerebral AngiographyBasilar ArteryBrainCerebral Arterial DiseasesCarotid ArteriesPulmonary ArteryIschemic Attack, TransientArterial Occlusive DiseasesCerebral PalsyCarotid Artery, InternalVertebral ArteryMesenteric ArteriesFemoral ArteryRenal ArteryUltrasonography, Doppler, TranscranialIntracranial AneurysmInfarction, Posterior Cerebral ArteryMagnetic Resonance ImagingInfarction, Anterior Cerebral ArteryBlood Flow VelocityTomography, X-Ray ComputedCircle of WillisIntracranial Embolism and ThrombosisSubarachnoid HemorrhageBrain EdemaCerebral HemorrhageTemporal ArteriesCerebral VeinsCarotid Artery DiseasesVasoconstrictionMagnetic Resonance AngiographyStrokeTime FactorsCerebrovascular DisordersCerebral RevascularizationCoronary Artery BypassIliac ArteryCranial Fossa, PosteriorRadial ArteryDisease Models, AnimalRats, Sprague-DawleyReperfusionMalaria, CerebralUmbilical ArteriesTreatment OutcomeNeuroprotective AgentsMammary ArteriesAneurysm, RupturedCarotid Artery, CommonSubclavian ArteryMuscle, Smooth, VascularBlood PressureVasodilationRegional Blood FlowBrain InfarctionOphthalmic ArteryCarotid Artery, ExternalBrachial ArterySplenic ArteryVasospasm, IntracranialRats, WistarCarotid StenosisPia MaterCoronary VesselsHepatic ArteryAngiography, Digital SubtractionCarotid Artery ThrombosisUltrasonography, DopplerConstrictionMesenteric Artery, SuperiorVasodilator AgentsDominance, CerebralEndothelium, VascularMoyamoya DiseaseCeliac ArteryFollow-Up StudiesReperfusion InjuryEmbolization, TherapeuticCatsHemodynamicsDogsRetrospective StudiesProspective StudiesAngiographyIntracranial ThrombosisNeurologic ExaminationIntracranial ArteriosclerosisImage Processing, Computer-AssistedLaser-Doppler FlowmetryOxygenIntracranial Pressure