Table 2 Time to patient support assembly adjustment post initial setup, as well as directional population-based intrafraction motion statistics, as a function of treatment category
Treatment category | Time to patient support assembly adjustment [min] | Overall displacement [mean ± std, mm] | Group Mean error [M, mm] | Systematic error [Σ, mm] | R andom error [σ, mm] | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
25thPercentile | Mean | Median | |||||||||||||||||||
LR | AP | SI | LR | AP | SI | LR | AP | SI | LR | AP | SI | LR | AP | SI | LR | AP | SI | LR | AP | SI | |
IMRTc | -- | 2.4 | 2.1 | -- | 3.7 | 3.4 | -- | 3.4 | 3.1 | 0.1 ± 0.6 | 0.1 ± 1.2 | −0.3 ± 1.3 | 0.05 | −0.02 | −0.31 | 0.27 | 0.5 | 0.49 | 0.6 | 1.09 | 1.18 |
IMRTcc | 6.8 | 4.5 | 4.7 | 6.8 | 7.8 | 8.0 | 6.8 | 6.5 | 7.0 | 0.0 ± 0.8 | 0.1 ± 1.5 | −0.5 ± 1.7 | −0.07 | 0.08 | −0.63 | 0.42 | 0.65 | 0.70 | 0.80 | 1.32 | 1.54 |
IMATc | -- | 1.9 | 1.4 | -- | 3.0 | 2.4 | -- | 2.8 | 2.3 | −0.1 ± 0.5 | 0.1 ± 1.1 | −0.2 ± 1.4 | −0.04 | 0.06 | −0.33 | 0.25 | 0.57 | 0.53 | 0.54 | 0.90 | 1.16 |
IMATcc | 10.9 | 7.4 | 6.0 | 13.1 | 9.9 | 8.7 | 13.1 | 10.1 | 8.6 | 0.1 ± 0.8 | 0.1 ± 1.4 | −0.7 ± 1.8 | 0.05 | 0.04 | −0.77 | 0.40 | 0.68 | 0.72 | 0.71 | 1.16 | 1.54 |