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Figure 9: Percent depth doses comparison in the heterogeneous layer phantom with water- and lung-equivalent materials in, predicted by anisotropic analytical algorithm (solid curve), calculated by Monte Carlo N-Particle (open circles), and measured with cylindrical ionization chamber (closed circles). (a) 6 MV in 4 cm × 4 cm field size, (b) 6 MV in 10 cm × 10 cm field size, (c) 10 MV in 4 cm × 4 cm field size, and (d) 10 MV photon beams in 10 cm × 10 cm field size (published by Kaoru Ono, 2010)

Figure 9: Percent depth doses comparison in the heterogeneous layer phantom with water- and lung-equivalent materials in, predicted by anisotropic analytical algorithm (solid curve), calculated by Monte Carlo N-Particle (open circles), and measured with cylindrical ionization chamber (closed circles). (a) 6 MV in 4 cm × 4 cm field size, (b) 6 MV in 10 cm × 10 cm field size, (c) 10 MV in 4 cm × 4 cm field size, and (d) 10 MV photon beams in 10 cm × 10 cm field size (published by Kaoru Ono, 2010)