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Figure 7: Gamma function results for: collapsed cone convolution (a), fast Fourier transform (b), and superposition convolution algorithm (c). The results were obtained in homogenous water phantom (10 × 10 cm2 field size and source-to-surface distance = 100 cm)

Figure 7: Gamma function results for: collapsed cone convolution (a), fast Fourier transform (b), and superposition convolution algorithm (c). The results were obtained in homogenous water phantom (10 × 10 cm<sup>2</sup> field size and source-to-surface distance = 100 cm)