PhotonsBone and BonesAbsorptionIntestinal AbsorptionBone RemodelingBone DensityBone ResorptionBone MarrowBone NeoplasmsBone Marrow CellsBone DevelopmentTomography, Emission-Computed, Single-PhotonBone DiseasesPhantoms, ImagingBone RegenerationBone MatrixBone Marrow TransplantationBone TransplantationSkin AbsorptionBiological AvailabilityScattering, RadiationFractures, BoneBone Diseases, MetabolicTime FactorsBone SubstitutesTomography, X-Ray ComputedBone Morphogenetic ProteinsSpectrum AnalysisSpectrophotometry, AtomicLightArtifactsX-Ray Absorption SpectroscopyJejunumRats, Sprague-DawleyImage Processing, Computer-AssistedBone Morphogenetic Protein 2SpectrophotometryMice, Inbred C57BLOsteogenesisVaccines, AttenuatedScintillation CountingFemurTemporal BoneRadiopharmaceuticalsIronRadiation DosageX-Ray MicrotomographyOsteoporosisRadiometryReproducibility of ResultsTomography, Emission-ComputedAdministration, OralDose-Response Relationship, DrugParietal BoneMonte Carlo MethodIntestine, SmallDisease Models, AnimalCells, CulturedKineticsModels, BiologicalTechnetiumZincOsteoblastsElementary ParticlesEar Protective DevicesEquipment DesignAbsorptiometry, PhotonWaterSensitivity and SpecificityTibiaImage EnhancementVirulenceCalciumAlgorithmsEquipment Failure AnalysisMineralsAlveolar Bone LossBone CementsModels, StructuralOrganotechnetium CompoundsMice, KnockoutX-RaysRadioisotopesRats, WistarBone CystsImage Interpretation, Computer-AssistedMolecular Sequence DataUltrasonicsOsteoclastsIntestinesZinc RadioisotopesThallium RadioisotopesPositron-Emission TomographyTransducersPhytic AcidTomography, OpticalIron RadioisotopesSkullSpectrophotometry, UltravioletComputer Simulation