Figure 3.
Evaluation of feature stability with inter- and intra-observer agreements based on the interclass correlation coefficient (ICC). In the 152 patients without lymph node metastasis (LNM) and 182 patients with LNM, features had good inter-observer (A) and intra-observer (B) agreements with ICCs more than 0.75 (above the red cutoff line). After this assessment, 496 features were selected from the 556 features.