title: Body composition stability in Lunar DPX.
abstract: This study examines how well a Lunar DPX can compensate for certain aging changes in its X-ray source. Total body scans were done on a phantom having variable soft tissue composition. Aging of the X-ray source was simulated by placing a thin aluminum foil over the beam exit window, and by deliberately misadjusting the high voltage power supply. The % fat measurement was found to change by up to 12%, but returned to within about 2% afer recalibration.
authors.affiliation: Lunar Corporation, Madison, WI 53713, USA.
authors.forename: R H
authors.initials: RH
authors.lastname: Nord
mesh_terms: D015502:Absorptiometry, Photon / Q000295:instrumentation* / Q000379:methods; D000273:Adipose Tissue / Q000033:anatomy & histology; D001823:Body Composition; D002138:Calibration; D006801:Humans; D019047:Phantoms, Imaging; D010969:Plastics; D015203:Reproducibility of Results; D012863:Skeleton
chemical_list: D010969:Plastics