Accuracy of dual-energy radiographic absorptiometry of the lumbar spine: cadaver study.
Dual-energy radiographic absorptiometry (DRA) was used to measure the bone mineral content and area density of lumbar vertebrae (L2-L3) in 11 cadavers. These data were subsequently compared with measured ash content and density. Excellent correlation was obtained between bone mineral content measured with DRA and ash weight (r = .963, P less than .0001). The accuracy error in determining mineral content in lumbar vertebrae with DRA was about 9%. In addition, strong correlation was observed between bone mineral density measured with DRA and ash density (r = .881, P less than .0001).
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C P
CP
Department of Radiology, University of California, San Diego.
Kim
R W
RW
Schaffler
M B
MB
Sartoris
D J
DJ
D000368:Aged; D000369:Aged, 80 and over; D015519:Bone Density; D006801:Humans; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging*; D008875:Middle Aged; D015900:Radiography, Dual-Energy Scanned Projection