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Table 14 Percentage of lateral dose profile points passing the three Γ-criteria with the initial electron beam energy fixed at 10.5 MeV, the energy FWHM at 0.120 MeV and beam divergence at default value of 0.The number of histories is 2.5 × 107

From: Linac photon beam fine-tuning in PRIMO using the gamma-index analysis toolkit

Focal Spot FWHM (cm)Average Dose Uncertainty (%)3 % /3mm (%)2 % /2mm (%)1 % /1mm (%)
0.105.9100.097.571.4
0.125.9100.0100.073.9
0.135.999.491.366.5