Qualitative (Visual Score) Results of Standard 18F-FDG PET/CT and Delayed 18F-FDG PET/CT
| Pathologic evaluation | ||||
| PET/CT | Visual score | LN metastasis | No LN metastasis | Total |
| Standard | 0 | 1 | 27 | 28 |
| 1 | 20 | 9 | 29 | |
| Total | 21 | 36 | 57 | |
| Delayed | 0 | 1 | 28 | 29 |
| 1 | 20 | 8 | 28 | |
| Total | 21 | 36 | 57 | |
Score 0 = uptake ≤ than background; score 1 = uptake > than background.