Decompressive CraniectomyInfarction, Middle Cerebral ArteryCraniotomyCerebral ArteriesMiddle Cerebral ArteryArteriesCerebral InfarctionCerebrovascular CirculationPosterior Cerebral ArteryAnterior Cerebral ArteryBrain IschemiaCerebral AngiographyBasilar ArteryCerebral Arterial DiseasesBrainCarotid ArteriesPulmonary ArteryIschemic Attack, TransientArterial Occlusive DiseasesCerebral PalsyUltrasonography, Doppler, TranscranialCarotid Artery, InternalMesenteric ArteriesRenal ArteryFemoral ArteryBlood Flow VelocityVertebral ArteryEar, MiddleIntracranial AneurysmInfarction, Anterior Cerebral ArteryIntracranial Embolism and ThrombosisBrain EdemaTemporal ArteriesTomography, X-Ray ComputedSubarachnoid HemorrhageCerebral HemorrhageCerebral VeinsCircle of WillisCarotid Artery DiseasesInfarction, Posterior Cerebral ArteryStrokeVasoconstrictionCerebrovascular DisordersMagnetic Resonance AngiographyReperfusionCerebral RevascularizationMagnetic Resonance ImagingTime FactorsCoronary Artery BypassIliac ArteryDisease Models, AnimalRadial ArteryRats, Sprague-DawleyNeuroprotective AgentsUmbilical ArteriesMalaria, CerebralMammary ArteriesBlood PressureMuscle, Smooth, VascularCarotid Artery, CommonVasodilationBrain InfarctionSubclavian ArteryAneurysm, RupturedRegional Blood FlowCarotid Artery, ExternalTreatment OutcomeOphthalmic ArteryRats, WistarVasospasm, IntracranialBrachial ArterySplenic ArteryPia MaterCarotid StenosisCoronary VesselsCarotid Artery ThrombosisHepatic ArteryConstrictionUltrasonography, DopplerAngiography, Digital SubtractionReperfusion InjuryVasodilator AgentsMesenteric Artery, SuperiorEndothelium, VascularMoyamoya DiseaseCeliac ArteryIntracranial ThrombosisHemodynamicsCatsDominance, CerebralDogsEmbolization, TherapeuticMeningeal ArteriesLaser-Doppler FlowmetryNeurologic ExaminationCarbon DioxideIntracranial ArteriosclerosisIntracranial PressureVasomotor SystemProspective Studies