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Figure 5: Comparison of the measured PDDs (solid lines) with the simulated ones (symbols) for 20 × 20 field size at 18 MV for both linacs. PDD = Percentage depth dose

Figure 5: Comparison of the measured PDDs (solid lines) with the simulated ones (symbols) for 20 × 20 field size at 18 MV for both linacs. PDD = Percentage depth dose