Table 4.
Maximum variation in the biological effective dose (BED) in the same patient, for individual voxels on the same iso-surface dose (14 Gy prescription dose) treated with 3 iso-centers (see Figure 1)
| Iso-center contribution (Gy) | Relative dose contribution (%) | Dose rate (Gy/min) | BED | |
| Point 1 (max BED) |
12.36 (shot 1) 1.47 (shot 3) 0.17 (shot 2) |
88.3 10.5 1.20 |
2.36 0.28 0.06 |
85.3 (+10.0%) |
| Point 2 (median BED) |
9.55 (shot 1) 4.09 (shot 3) 0.36 (shot 2) |
68.2 29.2 2.60 |
1.82 0.78 0.13 |
80.8 (+4.2%) |
| Point 3 (min BED) |
6.98 (shot 1) 5.05 (shot 3) 1.97 (shot 2) |
49.9 36.0 14.1 |
1.33 0.96 0.97 |
77.6 (Reference) |