Table 1 Depth of maximum dose and PDD at 10 cm depth for 6MV flattened and unflattened beams (reproduced with permission from MedEuropa)
Beam type | 6MV FFF | 6MV | ||||
|---|---|---|---|---|---|---|
Field size (cm2) | 3 × 3 | 5 × 5 | 10 × 10 | 3 × 3 | 5 × 5 | 10 × 10 |
dmax (mm) | ||||||
Reference | 16.97 | 16.99 | 16.98 | 15.01 | 15.01 | 14.99 |
Linac 1 | 16.6 | 17.3 | 17.8 | 14.9 | 15.7 | 15.0 |
Linac 2 | 17.0 | 17.2 | 16.4 | 15.7 | 15.7 | 15.1 |
Linac 3 | 16.9 | 17.2 | 17.0 | 15.0 | 15.5 | 15.1 |
PDD10 (%) | ||||||
Reference | 60.96 | 62.95 | 65.9 | 60.49 | 62.54 | 65.95 |
Linac 1 | 60.58 | 62.91 | 66.03 | 60.21 | 62.86 | 65.86 |
Linac 2 | 60.76 | 62.8 | 65.95 | 60.61 | 62.7 | 65.95 |
Linac 3 | 60.93 | 62.88 | 65.96 | 60.57 | 62.46 | 65.95 |