Figure 4
Calibration curves for H 1 and H 2 units. This shows the fitted adipose (solid) and glandular (dotted) calibration curves for the H1 (left-side plots) and H2 (right-side plots) units. The measured logarithmic relative response (LRE) quantities are averages represented by squares. The top plots show the W/Rh target/filter combinations acquired with 28 kV and the bottom plots show the W/Ag combinations acquired with 30 kV.