Case No | Blinded video diagnosis | FP-CIT result | Working clinical diagnosis | |

R1 | R2 | |||

1 | DT | PD | Normal | DT |

2 | ET | DT | Normal | DT |

3 | PD | PD | Abnormal (grade 3 JP; grade 2 JB) | TDPD |

4 | DT | DT | Normal | DT |

5 | DT | PD | Abnormal (grade 1) | TDPD |

6 | DT | DT | Normal | DT |

7 | Monosymptomatic rest tremor | DT | Normal | ET |

8 | DT | DT | Normal | DT |

9 | PD | DT | Abnormal (grade 1) | TDPD |

10 | DT | DT | Normal | DT |

11 | DT | DT | Normal | ET |

12 | PD | PD | Abnormal (grade 2 JP; grade 1 JB) | TDPD |

13 | ET | PD | Normal | DT |

14 | Monosymptomatic rest tremor | PD | Abnormal (grade 2 JP; grade 1 JB) | TDPD |

15 | ET | DT | Normal | DT |

16 | ET | DT | Normal | DT |

17 | PD | DT | Normal | DT |

18 | Atypical Tremor | PD | Abnormal (grade 2) | TDPD |

19 | DT | DT | Normal | DT |

20 | DT | DT | Normal | ET |

21 | PD/ Atypical Tremor | PD | Abnormal (grade 2 JP; grade 3 JB) | TDPD |

22 | DT | DT | Normal | DT |

23 | PD | PD | Normal | ET |

24 | DT | PD | Abnormal (grade 2) | TDPD |

25 | DT | DT | Normal | DT |

26 | DT | PD | Normal | DT |

27 | DT | DT | Normal | DT |

28 | PD | PD | Abnormal (grade 3 JP; grade 2 JB) | TDPD |

29 | ET | DT | Normal | DT |

30 | PD | PD | Normal | DT |

31 | PD | PD | Abnormal (grade 2 JP; grade 1 JB) | TDPD |

32 | PD/atypical tremor | DT | Normal | ET |

33 | PD | PD | Abnormal (grade 2) | TDPD |

34 | Atypical tremor | DT | Abnormal (grade 1) | TDPD |

35 | ET | DT | Abnormal (grade 1 JP; grade 2 JB) | TDPD |

36 | PD | PD | Abnormal (grade 2) | TDPD |

37 | ET | PD | Abnormal (grade 2) | TDPD |

38 | ET | PD | Normal | DT |

DT, dystonic tremor; ET, essential tremor; Grades 0–3 for

^{123}I-N-ω-fluoro-propyl- 2ß-carbomethoxy-3ß-(4-iodophenyl) nortropane ([^{123}I] FP-CIT).22; JP and JB refer to nuclear physicians across the two sites; PD, Parkinson's disease; R1, reviewer 1; R2, reviewer 2; TDPD, tremor dominant Parkinson's disease.