J Med Phys Close
 

Figure 4: Comparison of Monte Carlo calculated and measured percentage depth dose curves of 6 MV flattening filter-free photon beam (at source to surface distance = 100 cm) for 25 cm × 25 cm, 20 cm × 20 cm, 15 cm × 15 cm, 10 cm × 10 cm, and 5 cm × 5 cm field sizes. Depth dose profiles for 20 cm × 20 cm, 15 cm × 15 cm, 10 cm × 10 cm and 5 cm × 5 cm field sizes are scaled by 0.9, 0.8, 0.7, and 0.6, respectively, for inclusion on the same graph, and all profiles are normalized at their respective value of depth of maximum dose and expressed as percentage

Figure 4: Comparison of Monte Carlo calculated and measured percentage depth dose curves of 6 MV flattening filter-free photon beam (at source to surface distance = 100 cm) for 25 cm × 25 cm, 20 cm × 20 cm, 15 cm × 15 cm, 10 cm × 10 cm, and 5 cm × 5 cm field sizes. Depth dose profiles for 20 cm × 20 cm, 15 cm × 15 cm, 10 cm × 10 cm and 5 cm × 5 cm field sizes are scaled by 0.9, 0.8, 0.7, and 0.6, respectively, for inclusion on the same graph, and all profiles are normalized at their respective value of depth of maximum dose and expressed as percentage