Table 4. Absolute differences in the heart between the perturbed and the original plans.
| Direction | ΔV20Gy (%) | ΔV30Gy (%) | ΔDmean (Gy) | |||
|---|---|---|---|---|---|---|
| VMAT-5B | VMAT-10B | VMAT-5B | VMAT-10B | VMAT-5B | VMAT-10B | |
| A | -1.47 ± 0.68 | -1.64 ± 0.69 | -0.71 ± 0.48 | -0.78 ± 0.51 | -0.74 ± 0.22 | -0.92 ± 0.22 |
| P | 2.19 ± 0.91 | 1.97 ± 0.85 | 1.29 ± 0.70 | 1.16 ± 0.65 | 0.95 ± 0.30 | 0.72 ± 0.28 |
| L | -0.57 ± 0.18 | -0.77 ± 0.19 | -0.36 ± 0.21 | -0.44 ± 0.25 | -0.16 ± 0.07 | -0.36 ± 0.09 |
| R | 0.72 ± 0.16 | 0.54 ± 0.16 | 0.46 ± 0.21 | 0.36 ± 0.19 | 0.21 ± 0.09 | 0.00 ± 0.09 |
| S | -0.10 ± 0.16 | -0.31 ± 0.13 | -0.06 ± 0.09 | -0.17 ± 0.10 | -0.05 ± 0.07 | -0.27 ± 0.07 |
| I | 0.18 ± 0.17 | 0.00 ± 0.19 | 0.11 ± 0.10 | 0.02 ± 0.11 | 0.10 ± 0.07 | -0.11 ± 0.09 |
A, anterior; P, posterior; L, left; R, right; S, superior; I, inferior.