BJR -- McVey et al. 76 (903): 177 Figure 5

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Figure 5. The effect of median optical density (OD) on (a) effective dose, (b) OD difference and (c) signal-to-noise ratio (SNR) for the anteroposterior projection. The effect of median OD on (d) effective dose, (e) OD difference and (f) SNR for the lateral projection.