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The two‐dimensional absolute dose distribution of a central slice is evaluated in three different beam‐delivery methods with 6 MUs. (A) Megavoltage cone‐beam computed tomography images with 200 projections; (B) megavoltage cone‐beam computed tomography images with 360 projections (from 0 degrees to 359.9 degrees in a clockwise direction); (C) orthogonal pair images.
