Table 2 Number of recurrence or metastasis identified by imaging on per-patient and per-lesion basis
| Location | Gold standard | Imaging results | ||
| Patient based | Lesion based | 18F-FDG PET/MR | 18F-FDG PET/CT | |
| Local relapse | 3 | 3 | 2(67%) | 1(33%) |
| Lymph node metastasis | 17 | 43 | 42(98%) | 40(93%) |
| Total | 19 | 46 | 44(96%) | 41(89%) |