Table 3. Absolute differences in CTV between the perturbed and original plans.
| Direction | ΔD95% (Gy) | ΔD98% (Gy) | ΔD2% (Gy) | ΔV110% (%) | ||||
|---|---|---|---|---|---|---|---|---|
| VMAT-5B | VMAT-10B | VMAT-5B | VMAT-10B | VMAT-5B | VMAT-10B | VMAT-5B | VMAT-10B | |
| A | 0.50 ± 0.08 | -0.25 ± 0.16 | 0.55 ± 0.11 | -0.23 ± 0.16 | 0.64 ± 0.19 | -0.07 ± 0.12 | 2.13 ± 2.33 | 0.02 ± 0.04 |
| P | -0.79 ± 0.25 | -1.69 ± 0.33 | -1.05 ± 0.38 | -1.99 ± 0.48 | -0.59 ± 0.18 | -0.85 ± 0.21 | -0.43 ± 0.63 | -0.02 ± 0.08 |
| L | 0.32 ± 0.09 | -0.38 ± 0.18 | 0.37 ± 0.12 | -0.40 ± 0.17 | 0.59 ± 0.19 | -0.09 ± 0.19 | 1.87 ± 2.00 | 0.06 ± 0.12 |
| R | -0.57 ± 0.19 | -1.48 ± 0.23 | -0.78 ± 0.32 | -1.69 ± 0.35 | -0.38 ± 0.13 | -0.74 ± 0.20 | -0.31 ± 0.46 | -0.03 ± 0.08 |
| S | 0.19 ± 0.31 | -0.70 ± 0.18 | 0.17 ± 0.30 | -0.71 ± 0.15 | 0.19 ± 0.30 | -0.41 ± 0.15 | 0.55 ± 1.00 | -0.01 ± 0.08 |
| I | -0.15 ± 0.07 | -0.94 ± 0.14 | -0.16 ± 0.07 | -1.03 ± 0.14 | -0.05 ± 0.10 | -0.56 ± 0.17 | -0.08 ± 0.28 | -0.02 ± 0.08 |
A, anterior; P, posterior; L, left; R, right; S, superior; I, inferior.