Cerebral ArteriesMiddle Cerebral ArteryArteriesInfarction, Middle Cerebral ArteryPulmonary ArteryBasilar ArteryCerebral InfarctionCerebrovascular CirculationCarotid ArteriesPosterior Cerebral ArteryAnterior Cerebral ArteryRenal ArteryFemoral ArteryMesenteric ArteriesBrain IschemiaCerebral AngiographyVertebral ArteryCarotid Artery, InternalCerebral Arterial DiseasesIliac ArteryCoronary Artery BypassArterial Occlusive DiseasesRadial ArteryCarotid Artery DiseasesBrainMammary ArteriesIschemic Attack, TransientSubclavian ArteryTemporal ArteriesCarotid Artery, CommonUltrasonography, Doppler, TranscranialCerebral PalsyBrachial ArterySplenic ArteryIntracranial AneurysmUmbilical ArteriesVasoconstrictionTomography, X-Ray ComputedHepatic ArteryInfarction, Anterior Cerebral ArteryCoronary VesselsOphthalmic ArteryIntracranial Embolism and ThrombosisMagnetic Resonance AngiographySubarachnoid HemorrhageVasodilationMuscle, Smooth, VascularCircle of WillisCeliac ArteryMesenteric Artery, SuperiorBlood Flow VelocityTime FactorsCarotid Artery, ExternalBrain EdemaCerebral HemorrhageInfarction, Posterior Cerebral ArteryStrokeCerebral VeinsCerebrovascular DisordersBlood PressureRenal Artery ObstructionRegional Blood FlowDisease Models, AnimalRats, Sprague-DawleyCerebral RevascularizationThoracic ArteriesTreatment OutcomeMagnetic Resonance ImagingBronchial ArteriesCarotid StenosisCarotid Artery ThrombosisPopliteal ArteryAneurysm, RupturedEndothelium, VascularUlnar ArteryVasodilator AgentsReperfusionAngiographyNeuroprotective AgentsUterine ArteryMalaria, CerebralCoronary AngiographyUltrasonography, DopplerRats, WistarCarotid Artery InjuriesBrain InfarctionAngiography, Digital SubtractionHemodynamicsDogsStentsVasoconstrictor AgentsEmbolization, TherapeuticPia MaterVasospasm, IntracranialConstrictionMeningeal ArteriesConstriction, PathologicCoronary DiseaseProspective StudiesAxillary Artery