Enhancing CBCT-based CT synthesis using planning MRI in adaptive proton therapy for head cancer: A deep learning approach - Molina-Maza, JM; Viar-Hernandez, D; Rodriguez-Gonzalez, B; Sequeiro-Gonzalez, J; Vera-Sanchez, JA; Mazal, A; Malpica, N; Torrado-Carvajal, A; Perez-Moreno, JM; Rodriguez-Vila, B (Journal Of Applied Clinical Medical Physics, 2025)