title: Letter: Information density and bone scans.
mesh_terms: D001842:Bone and Bones; D006801:Humans; D007504:Iron Radioisotopes; D011877:Radionuclide Imaging; D013326:Strontium Radioisotopes; D013667:Technetium
chemical_list: D007504:Iron Radioisotopes; D013326:Strontium Radioisotopes; D013667:Technetium