Pulsatile FlowBlood Flow VelocityRegional Blood FlowModels, CardiovascularReplica TechniquesRheologyFlow CytometryHemorheologyStress, MechanicalModels, AnatomicShear StrengthUltrasonography, Doppler, ColorEquipment DesignCoronary CirculationPericytesPulmonary CirculationVeinsGene FlowBlood PressurePhantoms, ImagingHeart-Assist DevicesEchocardiography, Doppler, ColorPressurePerfusionHemodynamicsBlood VesselsFemoral ArteryBlood Vessel ProsthesisCarotid ArteriesArteriesEndothelium, VascularIntracranial AneurysmHeart Valve ProsthesisMaterials TestingTime FactorsCoronary VesselsComputer SimulationReproducibility of ResultsNitric Oxide Synthase Type IIISwineProsthesis DesignAortaCerebrovascular CirculationBiomechanical PhenomenaDogsModels, BiologicalOptic FlowCells, CulturedLaser-Doppler FlowmetryCattleFlow Injection AnalysisPeak Expiratory Flow RateVascular ResistanceMicrospheresBlood Circulation