title: Precision error in dual-photon absorptiometry related to source age.
abstract: An average, variable precision error of up to 6% related to source age was observed for dual-photon absorptiometry of the spine in a longitudinal study of bone mineral content involving 393 women. Application of a software correction for source decay compensated for only a portion of this error. The authors conclude that measurement of bone-loss rates using serial dual-photon bone mineral measurements must be interpreted with caution.
authors.affiliation: Kuakini Osteoporosis Study, Honolulu, HI 96817.
authors.forename: P D
authors.initials: PD
authors.lastname: Ross
authors.forename: R D
authors.initials: RD
authors.lastname: Wasnich
authors.forename: J M
authors.initials: JM
authors.lastname: Vogel
mesh_terms: D000328:Adult; D000368:Aged; D001842:Bone and Bones / Q000032:analysis; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging*; D008297:Male; D008875:Middle Aged; D008903:Minerals / Q000032:analysis; D008961:Models, Structural; D010024:Osteoporosis / Q000000981:diagnostic imaging*; D011877:Radionuclide Imaging / Q000592:standards*; D012984:Software
chemical_list: D008903:Minerals