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. Author manuscript; available in PMC: 2021 Dec 1.
Published in final edited form as: Radiother Oncol. 2020 Oct 8;153:122–129. doi: 10.1016/j.radonc.2020.09.057

Table 2.

The absolute percent relative error (%RE) for the predicted PDDs for all different combination of input and output data combinations.


Absolute %RE

Energy Input Field Size Output field size Mean* Max
6 MV WFF 4×4 10×10 0.26 ± 0.08 0.46
10×10 4×4 0.31 ± 0.10 0.51
4×4 30×30 0.29 ± 0.13 0.58
30×30 4×4 0.31 ± 0.09 0.52
10×10 30×30 0.23 ± 0.11 0.56
30×30 10×10 0.24 ± 0.06 0.35

10 MV WFF 4×4 10×10 0.24 ± 0.08 0.41
10×10 4×4 0.31 ± 0.12 0.53
4×4 30×30 0.29 ± 0.22 1.15
30×30 4×4 0.36 ± 0.18 0.82
10×10 30×30 0.19 ± 0.06 0.37
30×30 10×10 0.25 ± 0.10 0.51

15 MV WFF 4×4 10×10 0.29 ± 0.14 0.70
10×10 4×4 0.35 ± 0.17 0.93
4×4 30×30 0.31 ± 0.25 1.21
30×30 4×4 0.41 ± 0.23 1.04
10×10 30×30 0.19 ± 0.05 0.29
30×30 10×10 0.28 ± 0.16 0.75

6 MV FFF 4×4 10×10 0.32 ± 0.20 0.96
10×10 4×4 0.27 ± 0.16 0.77
4×4 30×30 0.37 ± 0.29 1.21
30×30 4×4 0.27 ± 0.14 0.71
10×10 30×30 0.24 ± 0.14 0.77
30×30 10×10 0.29 ± 0.17 0.92

10 MV FFF 4×4 10×10 0.22 ± 0.12 0.56
10×10 4×4 0.26 ± 0.13 0.62
4×4 30×30 0.25 ± 0.20 0.98
30×30 4×4 0.29 ± 0.17 0.72
10×10 30×30 0.19 ± 0.07 0.40
30×30 10×10 0.23 ± 0.14 0.71

Note: WFF = With flattening filter, FFF = Flattening filter free.

*

Data are shown as means± standard deviations.