Figure 4.

Visual comparison for the low-resolution and predicted high-resolution doses relative to the baseline high-resolution dose at the same axial level in (A) the anisotropic analytical algorithm (AAA)-calculated dose and (B) the AXB-calculated dose. dose distribution differences were created by subtracting the baseline from the low-resolution/predicted high-resolution doses, respectively. During this process, the low-resolution dose was linearly interpolated to a matrix size equivalent to the baseline. Upper and lower color scale bars in each figure indicate the range of the doses and dose distribution differences, respectively.