Beyond pixel: Superpixel-based MRI segmentation through traditional machine learning and graph convolutional network. - Zakia Khatun; Halldór Jónsson Jr.; Mariella Tsirilaki; Nicola Maffulli; Francesco Oliva; Pauline Daval; Francesco Tortorella; Paolo Gargiulo (Comput. Methods Programs Biomed., 2024)