Table 6 Calibration accuracy for the H 1 and H 2 units using the regression parameters
Target/filter and kV combination | Within-unit calibration | ||||||
|---|---|---|---|---|---|---|---|
H1 | H2 | ||||||
120mAs | 160mAsr | 200mAs | 120mAs | 160mAsr | 200mAs | ||
W/Rh | |||||||
kV = | 26 | 55.2 (0.46) | 56.6 (0.49) | 58.8 (0.48) | 53.4 (0.50) | 56.3 (0.46) | 57.7 (0.42) |
27 | 54.0 (0.45) | 55.7 (0.47) | 57.4 (0.45) | 53.2 (0.44) | 54.6 (0.44) | 56.3 (0.43) | |
28 | 56.1 (0.48) | 57.7 (0.48) | 58.9 (0.48) | 56.8 (0.39) | 57.9 (0.35) | 59.4 (0.37) | |
29 | 51.8 (0.47) | 53.0 (0.50) | 54.2 (0.48) | 52.7 (0.32) | 54.1 (0.30) | 54.8 (0.32) | |
30 | 52.4 (0.61) | 53.6 (0.64) | 54.5 (0.62) | 52.8 (0.39) | 53.9 (0.40) | 54.5 (0.43) | |
W/Ag | |||||||
kV = | 27 | 52.0 (0.78) | 53.4 (0.79) | 53.9 (0.81) | 53.2 (0.44) | 54.2 (0.44) | 55.0 (0.44) |
28 | 52.3 (0.89) | 53.3 (0.91) | 54.0 (0.93) | 53.0 (0.40) | 54.4 (0.41) | 53.4 (0.43) | |
29 | 52.0 (0.94) | 53.2 (0.96) | 53.3 (0.97) | 52.3 (0.40) | 53.6 (0.41) | 53.8 (0.41) | |
30 | 52.2 (0.98) | 53.2 (0.99) | 53.3 (1.00) | 53.4 (0.44) | 54.0 (0.45) | 54.4 (0.45) | |
31 | 57.1 (0.91) | 57.9 (0.90) | 58.0 (0.93) | 53.2 (0.51) | 54.1 (0.51) | 54.5 (0.52) | |
32 | 54.8 (0.97) | 55.6 (0.97) | 56.8 (1.00) | 54.9 (0.64) | 55.5 (0.65) | 56.7 (0.66) | |