Table 2.
Diagnostic changes in the early-onset group
| Case no. | Pre-PET diagnosis | Post-PET diagnosis (if different) | SUVR | Visual read |
|---|---|---|---|---|
| Cases with change in diagnosis | ||||
| EO1 | PPA due to AD | PPA due to FTD | 0.815 | neg |
| EO2 | PPA due to FTD | PPA due to AD | 1.624 | pos |
| EO3 | FTD | Frontal variant AD | 1.445 | pos |
| EO4 | MCI due to AD | Hippocampal sclerosis | 0.616 | neg |
| Cases without change in diagnosis | ||||
| EO5 | AD dementia | 1.315 | pos | |
| EO6 | AD dementia | 1.310 | pos | |
| EO7 | AD dementia | 1.531 | pos | |
| EO8 | AD dementia | 1.305 | pos | |
| EO9 | AD dementia | 1.358 | pos | |
| EO10 | AD dementia | 1.423 | pos | |
| EO11 | AD dementia | 1.470 | pos | |
| EO12 | AD dementia | 1.312 | pos | |
| EO13 | AD dementia | 1.696 | pos | |
| EO14 | AD dementia | 1.598 | pos | |
| EO15 | AD dementia | 1.655 | pos | |
| EO16 | MCI due to AD | 1.504 | pos | |
| EO17 | PCA due to AD (MCI stage) | 1.476 | pos | |
| EO18 | PCA due to AD | 1.526 | pos | |
| EO19 | PCA due to AD | 1.591 | pos | |
| EO20 | PPA due to AD | 1.639 | pos | |
| EO21 | PPA due to AD | 1.773 | pos | |
| EO22 | PPA due to AD | 1.772 | pos | |
| EO23 | PPA due to FTD | 1.054 | neg | |
| EO24 | CAA due to AD | 1.338 | pos | |
Abbreviations: PET, positron emission tomography; SUVR, standard uptake volume ratio; PPA, primary progressive aphasia; AD, Alzheimer disease; neg, negative; pos, positive; MCI, mild cognitive impairment; PCA, posterior cortical atrophy; FTD, frontotemporal dementia; CAA, cerebral amyloid angiopathy.