| Typicality: | 0.418 |
| Saliency: | 0.394 |
| in the first study | 7 | temporal |
| to examine plaque development | 7 | purpose |
| with an isotope | 3 | other |
| researcher → use → pet scans | 24 |
| researcher → use → pet imaging | 11 |
| researcher → use → a pet scan | 4 |
| researcher → conduct → pet scans | 3 |
| negative | neutral | positive |
| 0.102 | 0.796 | 0.101 |
| Raw frequency | 42 |
| Normalized frequency | 0.394 |
| Modifier score | 0.500 |
| Perplexity | 174.591 |