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American Journal of Roentgenology, Vol 149, Issue 6, 1199-1202
Copyright © 1987 by American Roentgen Ray Society

Articles

Mineral content of bone: measurement by energy subtraction digital chest radiography

SE Friedman, EV Dubovsky, J Dubovsky, CB Alexander, CA Robinson, EA Sabbagh, GT Barnes, and RG Fraser

Department of Radiology, University of Alabama at Birmingham 35233.

Several methods are presently available for measuring the mineral content of bone. Those in widespread use include dual-photon absorptiometry and quantitative CT. The feasibility of using dual-energy digital chest radiography for determination of the mineral content of posterior ribs on digital chest images was studied by using a prototype unit. The results showed a significant difference in the mineral density of the posterior ribs of control subjects and those of patients who had osteoporosis (251.1 +/- 36 mg Ca2+/cm2 of rib vs 158.8 +/- 48 mg Ca2+/cm2, p less than or equal to .01) and a close correlation with values obtained by dual-photon absorptiometry of the lumbar spine (r = .77). The results suggest that this technique can provide an accurate assessment of the presence or absence of osteoporosis.
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Copyright © 1987 by the American Roentgen Ray Society.