Comparison of two software versions for assessment of body-composition analysis by DXA

Obesity Research
B VozarovaP A Tataranni

Abstract

To compare two software versions provided by Lunar CO: for assessment of body composition analysis by DXA. Soft-tissue phantoms for lean tissue (water) and fat tissue (methanol) were repeatedly scanned using DXA machines (DPX-L; Lunar CO., Madison, WI) and analyzed using software version 1.33 and the updated year 2000-compatible version 1.35. For the intersoftware comparison, the phantoms were scanned 10 times (each scan was analyzed once) with both software versions using all three scanning modes (slow, medium, and fast) for a total of 60 scans and analyses. For the intermachine comparison, the same phantoms were scanned three times (each scan was analyzed once) with a second machine from the same manufacturer using all three scanning modes and version 1.35 only. Percentage of fat was the variable of interest. For version 1.33, fat was 9.9 +/- 0.4%, 10.0 +/- 0.5%, and 11.0 +/- 0.5% (mean +/- SD) for the lean-tissue phantom and 50.8 +/- 0.3%, 50.9 +/- 0.5%, and 51.1 +/- 0.6% for the fat-tissue phantom using the slow, medium, and fast scanning modes, respectively. For version 1.35, the respective fat values were 9.8 +/- 0.7%, 9.9 +/- 0.4%, and 10.3 +/- 0.7%, and 50.6 +/- 0.5%, 50.9 +/- 0.6%, and 50.8 +/- 0.8%, respectively. For ...Continue Reading

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Citations

Jun 10, 2010·International Journal of Obesity : Journal of the International Association for the Study of Obesity·H R HullD Gallagher
May 24, 2011·Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry·Derek PearsonDesmond J Green
Nov 26, 2008·Journal of Clinical Densitometry : the Official Journal of the International Society for Clinical Densitometry·Holly HullDympna Gallagher
Nov 25, 2011·Alimentary Pharmacology & Therapeutics·P E PardeeJ B Schwimmer
Jul 19, 2017·Medicine and Science in Sports and Exercise·Elizabeth Z MacdonaldRonald Hager

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