Intracranial AneurysmMiddle Cerebral ArteryAneurysm, RupturedCerebral ArteriesCerebral AngiographyInfarction, Middle Cerebral ArterySurgical InstrumentsAnterior Cerebral ArteryAneurysmSubarachnoid HemorrhagePosterior Cerebral ArteryNeurosurgical ProceduresCerebral RevascularizationEmbolization, TherapeuticTomography, X-Ray ComputedCerebrovascular CirculationCerebral InfarctionBrain IschemiaArteriesCerebral Arterial DiseasesTreatment OutcomeAngiography, Digital SubtractionMagnetic Resonance AngiographyUltrasonography, Doppler, TranscranialArterial Occlusive DiseasesIschemic Attack, TransientBasilar ArteryMicrosurgeryCarotid Artery, InternalBrainAneurysm, InfectedCoronary AneurysmBlood Flow VelocitySplenic ArteryIliac AneurysmBrain EdemaIntracranial Embolism and ThrombosisRenal ArteryReperfusionVertebral ArteryCarotid ArteriesAortic AneurysmStrokeCarotid Artery DiseasesPulmonary ArteryNeuroprotective AgentsTemporal ArteriesTime FactorsCircle of WillisCerebral HemorrhageDisease Models, AnimalCerebrovascular DisordersFemoral ArteryMagnetic Resonance ImagingAneurysm, DissectingIliac ArteryBrain InfarctionInfarction, Anterior Cerebral ArteryBlood Vessel Prosthesis ImplantationRats, Sprague-DawleyVascular Surgical ProceduresCerebral VeinsAngiographyCerebral PalsyAortic Aneurysm, ThoracicUmbilical ArteriesHeart AneurysmPopliteal ArterySubclavian ArteryMesenteric ArteriesCeliac ArteryStentsAneurysm, FalseMesenteric Artery, SuperiorConstrictionHepatic ArteryCraniotomyEndovascular ProceduresVasoconstrictionBlood PressureRats, WistarReperfusion InjuryRegional Blood FlowIntracranial ThrombosisCarotid Artery, ExternalOphthalmic ArteryBlood Vessel ProsthesisIntracranial EmbolismLigationUltrasonography, DopplerRetrospective StudiesFollow-Up StudiesVasodilationVasospasm, IntracranialRadial ArteryCarotid Artery, CommonPia MaterNeurologic ExaminationInfarction, Posterior Cerebral ArteryMoyamoya Disease