Textural analysis of DOTATOC-PET/MRI and its association with histological grading in patients with liver metastases from neuroendocrine tumors - Weber, M; Rischpler, C; Schaarschmidt, B; Fendler, WP; Lahner, H; Umutlu, L; Herrmann, K (Nuklearmedizin - NuclearMedicine, 2019)