Table 3 Pelvic lymph node involvement classification performances of the radiologists as well as the classification performances of the intravoxel incoherent motion (IVIM) classification models. The p-values of the relative classification performances of each model are given where the first IVIM classification model served as the reference. The first IVIM model used parameters dervied from the subspecialist’s tumours segmentations, and the second IVIM model used parameters dervied from the non-subspecialist’s tumour segementations. VOI: Volume of Interest