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Table 6 Descriptive statistics of the CIU and CA per observer (n = 4), only representing the certainty score of positive identified lesions, for the different scan durations in n = 21 patients

From: Optimization of parathyroid 11C-choline PET protocol for localization of parathyroid adenomas in patients with primary hyperparathyroidism

Scan duration of 1 min Scan duration of 2.5 min
  Obs1 Obs2 Obs3 Obs4   Obs1 Obs2 Obs3 Obs4
Mean CIU 3.54 2.56 4.55 4.40 Mean CIU 4.09 2.89 4.51 4.18
SD CIU 1.36 0.97 0.67 1.06 SD CIU 0.97 1.09 0.71 0.97
Range CIU 4 3 2 4 Range CIU 4 4 2 3
Mean CA 3.42 2.22 3.74 3.60 Mean CA 3.30 2.59 4.27 3.85
SD CA 1.30 1.01 1.36 1.24 SD CA 1.40 1.08 1.15 1.35
Range CA 4 3 4 4 Range CA 4 4 4 4
Scan duration of 5 min Scan duration of 10 min
  Obs1 Obs2 Obs3 Obs4   Obs1 Obs2 Obs3 Obs4
Mean CIU 4.21 4.00 4.77 3.94 Mean CIU 4.40 4.19 4.41 3.95
SD CIU 1.02 0.96 0.49 1.39 SD CIU 0.91 0.91 0.85 1.50
Range CIU 3 3 2 4 Range CIU 3 3 2 4
Mean CA 3.92 3.44 4.26 3.29 Mean CA 4.00 3.69 4.27 3.10
SD CA 1.25 1.01 1.31 1.47 SD CA 1.25 0.95 0.88 1.65
Range CA 4 3 4 4 Range CA 4 3 2 4
  1. CIU certainty increased uptake, CA certainty adenoma, Obs observer, SD standard deviation