Table 6 Summary of the technical parameters for treatment plans created with FF and FFF beams

Gantry positions

2

2

3

4

5

Fields

5.2 ± 0.7

3.0 ± 0.0

6.9 ± 2.1

4.1 ± 0.6

5.9 ± 0.9

14.8 ± 2.0

13.4 ± 1.2

14.9 ± 5.1

10.6 ± 2.5

11.4 ± 1.7

Range Fields

4 - 6

3 - 3

5 - 10

3 – 5

5 - 7

12 - 18

11 - 15

10 - 25

5 – 14

9 - 15

MU

244.3 ± 9.0

318.0 ± 2.3

257.4 ± 13.6

317.8 ± 11.8

305.7 ± 17.8

451.8 ± 27.8

686.1 ± 39.3

427.0 ± 76.5

411.5 ± 49.1

416.7 ± 33.6

Range MU

227 - 259

314 - 322

245 - 282

301 – 340

280 - 350

393 - 494

623 - 738

351 - 564

346 – 505

351 - 485

tx time [s]

146 ± 5

112 ± 1

128 ± 26

-

165 ± 11

213 ± 21

199 ± 14

188 ± 34

-

193 ± 21

Δ FFF – FF [s]

68

87

60

-

28