Optimization of Brain Tumor Segmentation on Magnetic Resonance Imaging (MRI) Using Attention Gate U-Net. Recursive Journal of Informatics, [S. l.], v. 4, n. 1, p. 56–64, 2026. DOI: 10.15294/rji.v4i1.27152. Disponível em: https://journal.unnes.ac.id/journals/rji/article/view/27152. Acesso em: 7 apr. 2026.