Figure 5
From: The impact of dose calculation algorithms on partial and whole breast radiation treatment plans
Isodose displays of the pencil beam convolution (left), analytic anisotropy algorithm (middle) and Monte Carlo (right) for an external beam partial breast irradiation treatment. The field border is shown in green on each of the slices. Differences in the distributions present predominantly at the lower doses. In-patient scattering modelled by the analytic anisotropic algorithm agrees well with the Monte Carlo calculations, but over predicts at the patient surface, increasing the dose to the contra-lateral breast shown in blue.