Original ResearchPublished 9 October 2026Q-rung orthopair fuzzy framework for multimodal MRI image fusion and U-Net-based segmentation for brain tumor detectionFelix Augustin · Deva Nithyanandham · Mahesh Kumar C. V. · David Raj M. · Saravanakumar Ramasamy · Saraswathi D. · Pandiyaraju VFrontiers in Artificial Intelligencedoi 10.3389/frai.2026.1840304