Fig. 2

All NPC patients underwent pre-treatment MR scans and then received radiotherapy. After radiotherapy, they underwent regular MRI follow-up to monitoring the treatment response. We developed three radiomic models, models 1, 2, and 3, to predict RTLI at the last 1, 2, and 3 MRI scans (N-1, N-2, and N-3) before MRI confirmation (defined as N) respectively