MicrospheresPolyglycolic AcidLactic AcidDelayed-Action PreparationsDrug CompoundingParticle SizePolymersDrug CarriersRegional Blood FlowHolmiumYttrium RadioisotopesDrug Delivery SystemsDogsChemistry, PharmaceuticalCoronary CirculationChitosanPolyvinyl AlcoholPorosityMicroscopy, Electron, ScanningPolystyrenesBiocompatible MaterialsCerium RadioisotopesGelatinArteriovenous AnastomosisHexuronic AcidsAlginatesRadioisotopesGlucuronic AcidCapsulesNafronylCerium IsotopesStrontium RadioisotopesPancreatinSurface PropertiesExcipientsHydrogelBlood CirculationEmulsionsHemodynamicsCardiac OutputImmunoassayAbsorbable ImplantsTechnology, PharmaceuticalFluorescent DyesIntracranial Embolism and ThrombosisBiofoulingHepatic ArteryCerebrovascular CirculationSolubilityBlood Flow VelocityCollateral CirculationInjections, Intra-ArterialYttriumScandiumBronchial ArteriesTime FactorsPulmonary CirculationFluorocarbonsSwineMagneticsEmbolization, TherapeuticFluorescenceRabbitsPolymethacrylic AcidsNitrogen RadioisotopesVascular ResistanceSerum Albumin, BovineNiobiumBiosensing TechniquesLiver CirculationBlood PressureTissue EngineeringEmbolismAcoustic MaculaeIofetamineTechnetium Tc 99m Aggregated AlbuminOptical FibersInjectionsDisease Models, AnimalSilicon DioxideRats, WistarPolyethylene GlycolsDiffusionMechanicsPolyglactin 910Coated Materials, BiocompatibleLiver NeoplasmsReproducibility of ResultsSolventsMicrocirculationEndocardiumRats, Sprague-DawleyOrganotechnetium CompoundsHindlimbSplanchnic CirculationIridoid GlycosidesPerfusionSensitivity and SpecificityRadiopharmaceuticalsDrug Implants