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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 (%)
236.491.257.517.5
518.097.474.024.7
1012.1100.088.038.0
257.9100.099.774.7
1004.1100.0100.084.1