Mineral content of bone: measurement by energy subtraction digital chest radiography.
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.
Friedman
S E
SE
Department of Radiology, University of Alabama at Birmingham 35233.
Dubovsky
E V
EV
Dubovsky
J
J
Alexander
C B
CB
Robinson
C A
CA
Sabbagh
E A
EA
Barnes
G T
GT
Fraser
R G
RG
D000328:Adult; D000368:Aged; D001842:Bone and Bones / Q000032:analysis* / Q000000981:diagnostic imaging; D002118:Calcium / Q000032:analysis*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010024:Osteoporosis / Q000000981:diagnostic imaging / Q000378:metabolism; D011856:Radiographic Image Enhancement; D013902:Radiography, Thoracic; D011877:Radionuclide Imaging; D012272:Ribs / Q000032:analysis / Q000000981:diagnostic imaging; D013382:Subtraction Technique
D002118:Calcium