Table 1.
Parameterized measured and calculated (using PSF and MSM) depth–dose curves from three electron beam energies at the 10 cm × 10 cm field size.
| PDD parameters | 6 MeV |
8 MeV |
10 MeV |
||||||
|---|---|---|---|---|---|---|---|---|---|
| Measured | PSFa | MSMb | Measured | PSF | MSM | Measured | PSF | MSM | |
| EP0 (MeV) | 6.21 | 6.20 | 6.16 | 8.24 | 8.25 | 8.23 | 9.94 | 9.92 | 9.88 |
| E0 (MeV) | 5.68 | 5.67 | 5.62 | 7.43 | 7.45 | 7.39 | 9.29 | 9.30 | 9.24 |
| R100 (mm) | 14.00 | 14.00 | 14.00 | 18.00 | 18.00 | 18.00 | 24.00 | 24.00 | 24.00 |
| R85 (mm) | 18.60 | 18.80 | 18.50 | 25.80 | 26.20 | 26.00 | 32.70 | 33.00 | 32.80 |
| R50 (mm) | 24.40 | 24.30 | 24.10 | 31.90 | 32.00 | 31.70 | 39.87 | 39.91 | 39.65 |
| Rq (mm) | 17.80 | 18.30 | 18.10 | 24.00 | 24.6 | 24.20 | 30.40 | 30.80 | 31.00 |
| Rp (mm) | 30.10 | 30.01 | 29.60 | 40.30 | 40.35 | 40.25 | 48.80 | 48.70 | 48.50 |
a
Phase-space file.
b
Multiple-source model.