Table 2.
Clinical diagnoses and their corresponding imaging results
| Clinical gold standard diagnosis | Summed [n] | 6-[18F]FDOPA abnormal [n, %] | N1 abnormal [n, %] |
|---|---|---|---|
| IPS | 18 | 18 (100%) | 17 (94%) |
| APS | 9 | 7 (77%) | 5 (55%) |
| Progressive supranuclear palsy | 6 | 5 (83%) | 3 (50%) |
| Corticobasal degeneration | 2 | 1 (50%) | 1 (50%) |
| Multiple system atrophy | 1 | 1 (100%) | 1 (100%) |
| Non-parkinsonian movement disorders | 16 | 1 (6%) | 4 (25%) |
| Essential tremor | 6 | 0 (0%) | 2 (33%) |
| Vascular parkinsonism | 3 | 0 (0%) | 1 (33%) |
| Drug-induced parkinsonism | 2 | 0 (0%) | 0 (0%) |
| Restless legs syndrome | 1 | 1 (100%) | 0 (0%) |
| Ataxia | 1 | 0 (0%) | 0 (0%) |
| Motor neuron disease | 1 | 0 (0%) | 1 (100%) |
| Alzheimer’s disease | 1 | 0 (0%) | 0 (0%) |
| Huntington’s disease | 1 | 0 (0%) | 0 (0%) |
IPS idiopathic Parkinson syndrome, APS atypical parkinsonian syndrome