Precision of a dual energy X-ray absorptiometry device |
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| Authors: | F Forkusuz S I??kl? S Ak?n M Ungan A ?enköylü N K Aras |
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| Institution: | (1) Medical Center Ankara, Middle East Technical University, 06531, Turkey;(2) University of Bahcesehir, 34583 Istanbul, Turkey |
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| Abstract: | The standard method to diagnose and follow-up osteoporosis is the measurement of bone mineral density (BMD) using dual X-ray
absorptiometry (DEXA). Manufacturers' manuals of DEXA devices state the intrascanner coefficient of variance is less than
0.01 g/cm2. The aim of this study was to evaluate the in vivo coefficient of variance of a Lunar DPX scanner in male and female healthy
adult subjects. Average BMD for females and males were 1.170±0.091 g/cm2 and 1.272±0.115 g/cm2, respectively. Monthly phantom measurements provided and controlled by the manufacturer were 1.243±0.008 g/cm2 (range 1.222 to 1.257) and the coefficient of variance was 0.006. It is concluded that the in vivo coefficient of variance
of DEXA devices can slightly be higher than that proposed by the manufacturer.
This revised version was published online in August 2006 with corrections to the Cover Date. |
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