Reversing the Relationship Between Dual-Energy X-ray Absorptiometry and the 4-Component Model With 1 Sign Flip

We thoroughly enjoyed reading the recent JCD article “An Investigation Into the Differences in Bone Density and Body Composition Measurements Between 2 GE Lunar Densitometers and Their Comparison with a 4-Component Model” from Watson et al (1). We commend the authors for an interesting and practical study comparing dual-energy X-ray absorptiometr y (DXA) body composition measurements to a gold-standard 4-component (4-C) model. Watson and colleagues found “a significant difference between 4-C-derived fat mass (FM) and [all DXA FM measurements]” ranging from −0.936 to −2.157 kg.

Source: Journal of Clinical Densitometry - September 28, 2017 Category: Radiology Authors: Bennett K. Ng, Markus J. Sommer, John A. Shepherd Tags: Letter to the Editor Source Type: research