Figure 4From: Fast 3D dosimetric verifications based on an electronic portal imaging device using a GPU calculation engineThe axial-depth–dose curves in the heterogeneous slab phantom that were obtained using the various algorithms for the 6 MV photon beam and the different field sizes: a) field size of 3 cm × 3 cm, b) field size of 10 cm × 10 cm and c) field size of 20 cm × 20 cm.Back to article page