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Simulated torso-sized digital phantom. 20 hot spherical “tumours” were placed at least 5 sphere diameters apart at 5 radial distances from the central axis (0, 16, 22 (along the major axis), 22 (along the minor axis) and 32 voxels). The phantom used for the Monte-Carlo simulations described in Section 2.5 contained the 9 spheres between the blue dotted lines.
