Table 4 Percentage of lateral dose profile points passing the three Γ-criteria for varying histories at an initial beam energy of 5.40 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 | 50.2 | 95.0 | 66.5 | 38.5 |
5 | 27.3 | 98.8 | 70.8 | 42.9 |
10 | 15.5 | 100.0 | 98.8 | 64.6 |
25 | 9.6 | 98.8 | 79.5 | 42.9 |
100 | 5.1 | 100.0 | 98.1 | 77.6 |