Figure 3.

Parameter adaptation. The initial lesion model is spherical with radius d, as seen in the simplified 2D representation on the left. The elements d_i used for the estimation of tumor edges and parameter α are shown in orange, the inner object used to compute β in dashed black, and the user landmarks p_c and p_b in red and green respectively. The parameter calculation is repeated for the updated ellipsoidal model shown on the right.