Table 1 Percentage of PDD dose points passing the three Γ-criteria. for varying histories at an initial beam energy of 6.26 MeV
From: Linac photon beam fine-tuning in PRIMO using the gamma-index analysis toolkit
Number of Histories (106) | Average Dose Uncertainty (%) | 3 % /3mm (%) | 2 % /2mm (%) | 1 % /1mm (%) |
|---|---|---|---|---|
2 | 36.4 | 91.2 | 57.5 | 17.5 |
5 | 18.0 | 97.4 | 74.0 | 24.7 |
10 | 12.1 | 100.0 | 88.0 | 38.0 |
25 | 7.9 | 100.0 | 99.7 | 74.7 |
100 | 4.1 | 100.0 | 100.0 | 84.1 |