“…Of the total patients, 83.33% (25/30) were enrolled from Europe, including Italy, France, Spain, Romania, and Portugal [ 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]; 13.33% (4/30) from North America (USA and Canada) [ 25 , 26 , 27 , 28 ]; and 3.33% (1/30) from Iran [ 29 ]. Of the total, 83.33% (25/30) were oncological patients who received [ 18 F]FDG PET/CT under clinical indications for staging, restaging, follow-up, and for the evaluation of therapeutic response [ 12 , 13 , 14 , 15 , 16 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 27 , 28 ]. The other five patients (P9, 18, 24, 28, and 30) underwent [ 18 F]FDG PET/CT for the detection of non-oncological disease or for the evaluation of clinically suspicious malignant disease [ 15 , 17 , 23 , 26 , 29 ], of which one patient (P28) was diagnosed with lung adenocarcinoma [ 26 ].…”