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Comparison between measured and modeled VersaHD beam data: (a) PDD of a 6 MV 10 × 10 cm2 field; (b) inline profiles of a 6 MV FFF 40 × 40 cm2 field measured at depths of 1.3, 5, 10, and 20 cm; (c) crossline profiles of a 10 MV 15 × 15 cm2 field measured at depths of 2.2, 5, 10, and 20 cm; (d) crossline profiles of a 10 MV FFF 2 × 2 cm2 field measured at depths of 2.2, 5, 10, and 20 cm; and (e) output factor of a 18 MV photon beam, respectively.
