Attention Xception UNet (AXUNet): A Novel Combination of CNN and Self-Attention for Brain Tumor Segmentation. - Farzan Moodi; Fereshteh Khodadadi Shoushtari; Gelareh Valizadeh; Dornaz Mazinani; Hanieh Mobarak Salari; Hamidreza Saligheh Rad (CoRR, 2025)