Table 5 Percentage of lateral dose profile points passing the three Γ-criteria with the initial electron beam energy fixed at 6.26 MeV, the focal spot FWHM and beam divergence are at default values of 0.The number of histories is 2.5 × 107
From: Linac photon beam fine-tuning in PRIMO using the gamma-index analysis toolkit
Energy FWHM (MeV) | Average Dose Uncertainty (%) | 3 % /3mm (%) | 2 % /2mm (%) | 1 % /1mm (%) |
|---|---|---|---|---|
0.120 | 7.9 | 100.0 | 92.6 | 53.4 |
0.140 | 7.9 | 100.0 | 99.4 | 68.3 |
0.150 | 7.9 | 100.0 | 99.4 | 70.8 |
0.160 | 7.9 | 100.0 | 98.1 | 65.8 |