A Semi-Supervised Framework for Breast Ultrasound Segmentation with Training-Free Pseudo-Label Generation and Label Refinement. - Ruili Li; Jiayi Ding; Ruiyu Li; Yilun Jin; Shiwen Ge; Yuwen Zeng; Xiaoyong Zhang 002; Eichi Takaya; Jan Vrba 001; Noriyasu Homma (CoRR, 2026)