PMID: 9537303Apr 16, 1998Paper

Comparison of in-vivo body composition using two Lunar dual-energy X-ray absorptiometers

European Journal of Clinical Nutrition
B OldroydM A Smith

Abstract

To compare in-vivo composition analysis between two dual energy X-ray absorptiometers, a DPX and a DPX/L, from the same manufacturer (LUNAR), pre(Study A) and post(Study B) hardware changes on both absorptiometers. Comparison of (1) quality assurance (QA) data: air-counts low (38 keV), air-counts high (70 keV), air-counts ratio, percent spillover, R-delrin; and (2) total body compartments: total body tissue (TBTISS), total body fat (TBF), percent total body fat (%TBF), total body lean (TBLEAN), total body bone mineral content (TBBMC) and total body bone mineral density (TBBMD), between the two absorptiometers. Centre for Bone and Body Composition Research, University of Leeds. Study A, 14 normal subjects and Study B, a different cohort of 19 normal subjects, were scanned on both machines on the same day. In Study A, large significant differences were observed in the QA parameters between the two machines. The DPX, air-counts low and air-counts high, being 25% and 22% lower than the DPX/L. The Bland Altman method of analysis indicated that the DPX was significantly higher for TBTISS (0.3 kg), %TBF (2%) and TBF ( 1.4 kg) and correspondingly lower for TBLEAN (-1.0 kg). No significant difference was observed in TBBMC. After the har...Continue Reading

Citations

Dec 27, 2005·Clinical Nutrition : Official Journal of the European Society of Parenteral and Enteral Nutrition·Laurence GentonDidier B Hans
Jun 23, 2006·Physics in Medicine and Biology·Sören Mattsson, Brian J Thomas
Dec 6, 2008·Current Opinion in Clinical Nutrition and Metabolic Care·Graham Woodrow
Aug 10, 2000·Current Opinion in Clinical Nutrition and Metabolic Care·C PichardP Jolliet

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