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] |
||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
25th Percentile |
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 |