Characteristics | All scans (n = 27) | [18F]FDOPA uptake | |
---|---|---|---|
Positive (n = 20) | Negative (n = 7) | ||
Age, years (mean ± SD) | 57 ± 13 | 59 ± 10 | 50 ± 17 |
Sex, male/female (%) | 37/63 | 25/75 | 71/29 |
Serum calcitonin, pmol/L (median (range)) | 20.5 (0.29–262)a | 62.0 (0.73–262) | 5.9 (0.29–61.0)b |
Scan indication (in fractions): | |||
Suspected recurrence | 13/27 | 6/20 | 7/7 |
Treatment monitoring | 10/27 | 10/20 | 0/7 |
Restaging | 4/27 | 4/20 | 0/7 |
Acquisition time, min (median (range)) | |||
Early | 15 (15–19) | 15 (15–19) | 15 (15–18) |
Late | 60 (55–69) | 60 (55–69) | 60 (55–60) |
[18F]FDOPA dose, MBq (mean ± SD) | 393.8 ± 45.2 | 394.1 ± 52.6 | 393.0 ± 10.5 |
Final diagnosis verification by reference standard (in fractions): | |||
Histology + imaging* | 8/27 | 8/20 | 0/7 |
Imaging* + clinical/biochemical data | 15/27 | 8/20 | 7/7 |
Histology only | 4/27 | 4/20 | 0/7 |