Summary
We compared two approaches for determining soft tissue baseline with dual energy X-ray absorptiometry (DEXA) of the spine. An average baseline for the entire L2–L4 region resulted in overestimation of the L2 density by 2% and under-estimation of L4 density by 2% in 122 subjects. The results for the L2–L4 region, and for L3, were comparable with both approaches and the precision errorin vivo also was comparable (0.8%).
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Mazess, R.B., Gifford, C., Bisek, J. et al. The effects of local versus average baseline determination on spinal density. Calcif Tissue Int 48, 308–310 (1991). https://doi.org/10.1007/BF02556149
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DOI: https://doi.org/10.1007/BF02556149