title: Dual photon absorptiometry in lumbar vertebrae. I. Theory and method.
mesh_terms: D000042:Absorption; D000576:Americium; D001842:Bone and Bones / Q000032:analysis*; D002587:Cesium Isotopes; D004601:Elementary Particles; D006801:Humans; D008159:Lumbar Vertebrae / Q000032:analysis*; D008433:Mathematics; D008722:Methods; D008903:Minerals / Q000032:analysis; D008954:Models, Biological; D009686:Nuclear Physics; D011868:Radioisotopes; D011874:Radiometry; D012542:Scattering, Radiation
chemical_list: D002587:Cesium Isotopes; D008903:Minerals; D011868:Radioisotopes; D000576:Americium