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. 2009 Feb 19;36(3):857–869. doi: 10.1118/1.3077122

Figure 19.

Figure 19

Primary profile comparison for two electromagnetic models in GATE simulations: (a) Direct shape; (b) relative comparison scaled by the primary profile from the low energy model. Less than 5% more primary radiation was generated in the standard model. The agreement between the standard and low energy models indicates that the parametrized photoelectric process in the standard model is a good approximation of the measured cross section data used in the low energy model.