Hierarchical Text-Guided Brain Tumor Segmentation via Sub-Region-Aware Prompts. - Bahram Mohammadi; Ta Duc Huy; Afrouz Sheikholeslami; Qi Chen 014; Vu Minh Hieu Phan; Sam White; Minh-Son To; Xuyun Zhang; Amin Beheshti; Luping Zhou; Yuankai Qi (CoRR, 2026)