1. Feasibility of bone density evaluation using plain digital radiography
M.B. Kinds, L.W. Bartels, A.C.A. Marijnissen, K.L. Vincken, M.A. Viergever, F.P.J.G. Lafeber, H.W.A.M. de Jong 
Osteoarthritis and Cartilage 
Volume 19, Issue 11, Pages (November 2011)
DOI: /j.joca
Copyright © 2011 Osteoarthritis Research Society International Terms and Conditions

2. Fig. 1
Gray values of the reference wedge for radiographs with Clinical PP. Mean and standard deviation (SD: error bars) of three repeated radiographs at 55kV (default: black diamonds), 66kV (dark gray circles), and 44kV (light gray squares). Correlation (R2) and equation between wedge steps (w) and gray value (g).
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2011 Osteoarthritis Research Society International Terms and Conditions

3. Fig. 2
Correlation (R2) between actual BD and BD normalized to the reference wedge for A Clinical PP; B Minimal PP. Mean and standard deviation (SD: error bars) of three repeated radiographs at 55kV (default: black diamonds with regression line), 66kV (dark gray circles), and 44kV (light gray squares).
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2011 Osteoarthritis Research Society International Terms and Conditions

4. Fig. 3
Screenshot of digital radiographs: A Default and Clinical PP; B 66kV, AEC and Clinical PP; C Default and Minimal PP; D 66kV, AEC and Minimal PP.
Osteoarthritis and Cartilage  , DOI: ( /j.joca )
Copyright © 2011 Osteoarthritis Research Society International Terms and Conditions