New Morphological Features for Grading Pancreatic Ductal Adenocarcinomas

Algorithm 3

Sub_PIP_Detection  (s , e , amp_list , T, pip_list).

Input: Start index s, End index   e ,   Atypia-Amplitude Signature amp_list,

   Threshold for PIP detection T, Pip list pip_list

Method:

(1) max_vd_idx ← Max_ VD _Idx(s, e, amp_list)

(2) max_vd ← −∞

(3) if max_vd_idx is not 0 then

(4)   max_vd ← VD   (s, max_vd_idx, e, amp_list)

(5) if max_vd > T then

(6)   Sub_PIP_Detection (s, max_vd_idx, amp_list, T, pip_list)

(7)   Sub_PIP_Detection (max_vd_idx, e, amp_list, T, pip_list)

(8) else

(9)   pip_list .add (amp_list.get(e))

(10) end if