Regional Blood FlowBlood Flow VelocityArteriesPulmonary ArteryCerebrovascular CirculationCerebral ArteriesCarotid ArteriesFemoral ArteryRenal ArteryMesenteric ArteriesBasilar ArteryLaser-Doppler FlowmetryVertebral ArteryIliac ArteryBlood PressureCoronary Artery BypassRadial ArteryMammary ArteriesPulsatile FlowVasodilationFlow CytometryCarotid Artery, InternalHemodynamicsBrachial ArterySubclavian ArteryCarotid Artery DiseasesOphthalmic ArteryMiddle Cerebral ArteryHepatic ArteryDogsCarotid Artery, CommonMesenteric Artery, SuperiorSplenic ArteryUmbilical ArteriesVascular ResistanceVasoconstrictionCoronary VesselsVasodilator AgentsXenon RadioisotopesCeliac ArteryTime FactorsMicrospheresUltrasonography, DopplerMicrocirculationBronchial ArteriesPulmonary CirculationUltrasonography, Doppler, ColorEndothelium, VascularRenal Artery ObstructionOxygenTemporal ArteriesCarotid Artery, ExternalRenal CirculationUterine ArteryArterial Occlusive DiseasesHyperemiaThoracic ArteriesCoronary AngiographySplanchnic CirculationHeart RateOxygen ConsumptionLiver CirculationBrainNitric OxidePopliteal ArteryRheologyTomography, Emission-ComputedCoronary DiseaseAngiographyMuscle, Smooth, VascularUlnar ArteryCarbon DioxideCoronary CirculationUltrasonography, Doppler, TranscranialVasoconstrictor AgentsMagnetic Resonance AngiographyModels, CardiovascularOxygen RadioisotopesTreatment OutcomeSwineBrain IschemiaBlood VolumeXenonInfarction, Middle Cerebral ArteryRats, Sprague-DawleyCarotid Artery InjuriesPlethysmographyVasomotor SystemBlood Circulation TimeGene FlowLigationAcetylcholineNitroprussideLegDisease Models, AnimalStentsCarotid StenosisCapillariesCarotid Artery ThrombosisConstriction, Pathologic