Characteristics of Included Studies (n = 8)
| First author, year | Country | Type of study | No. of patients | Mean age (y) | Sex (M/F) | Histology (SCC/AC/other) | Initial treatment | Type of scanner, slice thickness of CT, acquisition mode, and reconstruction method | Reason for imaging |
| Sharma, 2014 (17) | India | Retro | 180 | 56 (26–81) | 126/54 | 115/59/6 | S, C, SC, CR, SR, nCRT and S | Integrated PET/CT, 4 mm, 3D, IR | On indication |
| Sun, 2009 (18) | China | Retro | 20 | 55 (39–68) | 15/5 | NR | S and adj R | Integrated PET/CT, 3.3 mm, IR, NR | On indication |
| Roedl, 2008 (19) | United States | Retro | 47 | NR (NR) | 35/12 | 11/36/0 | S, R | Standalone PET and integrated PET/CT, 2 mm, NR, NR | Routine |
| Guo, 2007 (20) | China | Retro | 56 | NR (38–77) | 47/9 | NR | nCRT and S | Integrated PET/CT, 4.24 mm, NR, IR | On indication |
| Jadvar, 2006 (21) | United States | Retro | 46 | NR (47–84) | 50/10 | NR | S, SC, R, C | Integrated PET/CT, 3.4 mm, NR, IR | Routine |
| Teyton, 2009 (22) | France | Prosp | 41 | 59 (43–83) | 38/3 | 31/10/0 | S, SC | Standalone PET, NR, 3D, IR | Routine |
| Kato, 2004 (23) | Japan | Retro | 55 | 61 (36–74) | 48/7 | 50/3/2 | S | Standalone PET, 3.1 mm, NR, IR | Routine |
| Flamen, 2000 (24) | Belgium | Retro | 41 | 62 (NR) | 36/5 | 14/27 | S | Standalone PET, NR, NR, IR | On indication |
SCC = squamous cell carcinoma; AC = adenocarcinoma; Retro = retrospective; S = surgery; C = chemotherapy; SC = surgery and chemotherapy; CR = chemoradiotherapy; SR = surgery and radiotherapy; nCRT = neoadjuvant chemoradiotherapy; 3D = 3 dimensional; IR = iterative reconstruction; NR = not reported; adj = adjuvant; R = radiotherapy; Prosp = prospective.