Visual Evaluation of Tumor Invasion Using the 2 Modalities
| Detection | Visual evaluation | |||||
| Diagnosis | n | 11C-choline | 18F-FDG | 11C-choline = 18F-FDG | 11C-choline > 18F-FDG | 18F-FDG > 11C-choline |
| Nasopharynx | 12 | 12 | 12 | 12 | 0 | 0 |
| Skull base | 14 | 14 | 12 | 9 | 4 | 1 |
| Brain | 12 | 12 | 10 | 6 | 6 | 0 |
| Orbit | 3 | 3 | 0 | 0 | 3 | 0 |
Equals sign indicates similar clear border or similar large extent. Greater-than sign indicates clearer border or larger extent or when 11C-choline PET/CT was positive and 18F-FDG PET/CT was negative.