Table 9 Calibration accuracy for images acquired with the small FOV calibrated with data acquired with the large FOV
Target/filter and kV combination | H1 | H2 | Target/filter and kV combination | H3 | |||||
|---|---|---|---|---|---|---|---|---|---|
Small FOV | Large FOV | Small FOV | Large FOV | Small FOV | Large FOV | ||||
W/Rh | Mo/Mo | ||||||||
kV = | 25 | -- | -- | -- | -- | kV = | 25 | 53.0 (0.37) | 54.5 (0.49) |
26 | 54.5 (0.38) | 51.9 (0.47) | 51.8 (0.28) | 51.6 (0.44) | 26 | 52.3 (0.30) | 53.7 (0.40) | ||
27 | 53.0 (0.38) | 51.8 (0.46) | 48.2 (0.34) | 50.6 (0.43) | 27 | 53.1 (0.24) | 54.6 (0.34) | ||
28 | 53.2 (0.44) | 52.3 (0.46) | 51.5 (0.42) | 50.6 (0.43) | 28 | 53.3 (0.17) | 54.6 (0.23) | ||
29 | 52.5 (0.50) | 51.4 (0.50) | 51.5 (0.55) | 51.8 (0.33) | 29 | 54.2 (0.14) | 55.4 (0.17) | ||
30 | 53.0 (0.64) | 52.1 (0.63) | 51.6 (0.72) | 52.6 (0.30) | 30 | 54.1 (0.17) | 55.1 (0.20) | ||
31 | -- | -- | -- | -- | 31 | 54.7 (0.25) | 55.7 (0.32) | ||
W/Ag | Mo/Rh | ||||||||
kV = | 27 | 52.2 (0.39) | 52.4 (0.78) | 52.7 (0.70) | 53.3 (0.44) | kV = | 27 | 51.2 (1.15) | 53.6 (1.52) |
28 | 52.1 (0.42) | 52.1 (0.92) | 52.2 (0.72) | 53.5 (0.41) | 28 | 51.7 (1.15) | 53.8 (1.52) | ||
29 | 50.9 (0.42) | 52.1 (0.96) | 52.1 (0.75) | 52.8 (0.41) | 29 | 51.6 (1.15) | 54.0 (1.52) | ||
30 | 52.1 (0.43) | 52.5 (0.99) | 51.9 (0.86) | 53.0 (0.44) | 30 | 52.3 (1.08) | 54.5 (1.42) | ||
31 | 56.3 (0.41) | 56.7 (0.90) | 52.2 (0.96) | 53.2 (0.51) | 31 | 52.3 (1.08) | 54.6 (1.37) | ||
32 | 54.9 (0.38) | 54.8 (0.97) | 54.5 (1.00) | 54.6 (0.64) | 32 | 52.7 (1.01) | 54.6 (1.24) | ||
33 | -- | -- | -- | -- | 33 | 53.3 (0.99) | 55.0 (1.15) | ||
34 | -- | -- | -- | -- | 34 | 53.8 (0.91) | 55.6 (1.00) | ||