MineralsRadiusBone and BonesPhotonsAbsorptiometry, PhotonActivation AnalysisMetacarpusOsteoporosisBone DensityTomography, Emission-Computed, Single-PhotonLumbar VertebraeMenopauseOrganotechnetium CompoundsBody CompositionTechnetium Tc 99m ExametazimeThallium RadioisotopesOximesRadiopharmaceuticalsTomography, Emission-ComputedTechnetiumIofetamineIodine RadioisotopesFemur NeckIodobenzenesBone Diseases, MetabolicAdipose TissueCerebrovascular CirculationXenon RadioisotopesTechnetium Tc 99m SestamibiThalliumAdiposityTechnetium Tc 99m PyrophosphateTomography, X-Ray ComputedPhantoms, ImagingFemurTropanesOsteoporosis, PostmenopausalLightSensitivity and SpecificityAnthropometryPositron-Emission TomographyScattering, RadiationBrainElementary ParticlesMonte Carlo MethodAmphetaminesMagnetic Resonance ImagingBody Mass IndexRadiationReproducibility of Results