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Table 2 Image quality scores for 68Ga-satoreotide trizoxetan PET/CT and PET, by peptide mass and radioactivity range

From: A novel read methodology to evaluate the optimal dose of 68Ga-satoreotide trizoxetan as a PET imaging agent in patients with gastroenteropancreatic neuroendocrine tumours: a phase II clinical trial

Peptide mass range Radioactivity range
40–80 MBq 100–140 MBq 160–200 MBq Total
PET/CT readings  
 5–20 µg 9/16 (56.3) 10/16 (62.5) 10/16 (62.5) 29/48 (60.4)
 30–45 µg 13/16 (81.2) 14/16 (87.5) 13/16 (81.3) 40/48 (83.3)
 Total 22/32 (68.8) 24/32 (75.0) 23/32 (71.9)
PET readings  
 5–20 µg 7/16 (43.8) 14/16 (87.5) 13/16 (81.3) 34/48 (70.8)
 30–45 µg 11/16 (68.8) 15/16 (93.8) 13/16 (81.3) 39/48 (81.3)
 Total 18/32 (56.3) 29/32 (90.6) 26/32 (81.3)
  1. During the image quality readings, each image was assigned a “1” (for optimal image quality) or a “0” (for non-optimal image quality). For each pair of patient images of 68Ga-satoreotide trizoxetan obtained on day 1 and day 16–22 of the study, one or both images could score “1”. The numerator of the image quality score is the sum of both readers’ scores, and the denominator is the total number of PET/CT and PET scans that were read and scored
  2. Data are presented as n/N (%)
  3. CT computed tomography, PET positron emission tomography