Characteristics of Study Cohort
| Characteristic | n |
| Sex | |
| Female | 17 |
| Male | 13 |
| Eastern Cooperative Oncology Group performance status | |
| 0 | 13 |
| 1 | 14 |
| 2 | 3 |
| Histology | |
| Adeno | 23 |
| Squamous | 4 |
| Large cell | 0 |
| Bronchioloalveolar | 3 |
| PET | |
| Baseline (18F-FDG and 18F-FLT) | 30 |
| 18F-FDG PET week 1 | 30 |
| 18F-FLT PET week 1* | 28 |
| 18F-FDG PET week 6† | 22 |
| 18F-FLT PET week 6† | 22 |
| Smoking status | |
| Nonsmoker | 10 |
| Smoker | 20 |
| Epidermal growth factor receptor mutation status | |
| Positive | 5 |
| Negative | 18 |
| Not tested | 7 |
| Race | |
| Caucasian | 28 |
| Hispanic | 2 |
Median age was 64 y; age range was 39–79 y.
↵* One patient missed 18F-FLT PET scan at week 1 and showed early progression before day 48. In 1 patient, early 18F-FLT PET dataset was missing.
↵† Eight patients missed 18F-FDG and 18F-FLT PET at week 6, 6 of whom had shown early progression before day 48.