Bone DensityOsteoporosisAbsorptiometry, PhotonBone and BonesDensitometryOsteoporosis, PostmenopausalFractures, BoneBone Diseases, MetabolicRadiusBone RemodelingLumbar VertebraeRadiographic Image Interpretation, Computer-AssistedFemurMammographyRadiographic Image EnhancementReproducibility of ResultsBone ResorptionCalibrationTomography, X-Ray ComputedPhantoms, ImagingBone DevelopmentBreastBone MarrowFemur NeckBone DiseasesAlgorithmsBone Marrow CellsBone Density Conservation AgentsRisk FactorsBone NeoplasmsBone RegenerationTibiaSpineHipCalcium, DietaryBone TransplantationArm BonesCalcaneusBone MatrixOsteocalcinBone Marrow TransplantationDiphosphonatesOsteogenesisPelvic BonesTime FactorsMetacarpusBone SubstitutesAlkaline PhosphataseWeight-BearingAlendronateBiomechanical PhenomenaX-Ray MicrotomographyBone Morphogenetic Protein 2OsteoblastsMandibleBone Demineralization, PathologicOsteoclastsParathyroid HormoneOsseointegrationAlveolar Bone LossPopulation DensityBone Morphogenetic ProteinsMineralsCalciumIliumFractures, SpontaneousMenopauseBiological Markers