Comparison of Image-Based and Clinical Consensus Classifications
| Image-based | ||||
| Classification | AD | LBD | FTD | Total |
| Clinical | ||||
| AD | 41* | 4 | 3 | 48 |
| LBD | 4 | 11* | 3 | 18 |
| FTD | 16 | 2 | 9* | 27 |
| Total | 61 | 17 | 15 | 93 |
↵* Subjects with concordant clinical classifications. Largest discrepant group is subjects classified as FTD but meeting image-based criteria for AD—that is, elevated 11C-PiB binding.