Table 3.
Absolute and relative difference in dose between PB-PB and PB-MC, and PB-MC scaled plans. (Dpres – dose relative to the prescribed dose of 70 Gy (RBE))
| Metric, Gy (RBE) (%Dpres) |
Difference in dose | ||
|---|---|---|---|
| PB-PB – PB-MC | PB-PB – PB-MC (scaled) | PB-PB – MC-MC | |
| Overall | |||
| CTV D99 | |||
| Median | 3.7 (5) | 0.0 (0) | 0.0 (0) |
| Range, | 2.3 to 6.9 (3 to 10) | 0.0 to 0.0 (0 to 0) | 0.0 to 0.0 (0 to 0) |
| CTV mean | |||
| Median, | 1.8 (3) | −2.2 (-3) | −0.5 (-1) |
| Range, | 0.5 to 4.6 (1 to 7) | −3.2 to 1.4 (-5 to 2) | −0.8 to 0.6 (-1 to 1) |
| CTV D2 | |||
| Median, | 0.3 (0.4) | −4.0 (-6) | −0.3 (0) |
| Range, | −1.6 to 3.1 (-2 to 4) | −5.3 to -2.4 (-8 to -3) | −1.4 to 1.0 (-2 to 1) |
| With predictors, n = 7 | |||
| CTV D99 | |||
| Median, | 2.9 (4) | 0.0 (0) | 0.0 (0) |
| Range, | 2.3 to 4.1 (3 to 6) | 0.0 to 0.0 (0 to 0) | 0.0 to 0.0 (0 to 0) |
| CTV mean | |||
| Median, | 0.7 (1) | −2.1 (-3) | −0.3 (0) |
| Range, | 0.5 to 1.7 (1 to 2) | −2.9 to -1.6 (-4 to -2) | −0.7 to 0.0 (-1 to 0) |
| CTV D2 | |||
| Median, | −0.4 (-1) | −3.5 (-5) | −0.2 (0) |
| Range, | −1.6 to 0.8 (-2 to 1) | −5.2 to -2.4 (-7 to -3) | −1.4 to 0.4 (-2 to 1) |
| The rest, n = 13 | |||
| CTV D99 | |||
| Median, | 4.4 (6) | 0.0 (0) | 0.0 (0) |
| Range, | 3.2 to 6.9 (5 to 10) | 0.0 to 0.0 (0 to 0) | 0.0 to 0.0 (0 to 0) |
| CTV mean | |||
| Median, | 2.5 (4) | −2.1 (-3) | −0.5 (-1) |
| Range, | 1.4 to 4.6 (2 to 7) | −3.2 to 1.4 (-5 to 2) | −0.8 to 0.6 (-1 to 1) |
| CTV D2 | |||
| Median, | 0.9 (1) | −3.9 (-6) | −0.4 (1) |
| Range, | −1.5 to 3.1 (-2 to 4) | −5.3 to -3.2 (-8 to -5) | −1.3 to 1.0 (-2 to 1) |