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. 2017 Sep 19;8(48):84473–84488. doi: 10.18632/oncotarget.21055

Table 1. Principle characteristics of included studies.

Author (Year) Country (Ethnicity) Number Design Mean age (Years) Gender (M/F) Imaging examination Reference standard*
Giganti 2017 [46] Italy (Caucasian) 89 R 71 (66–78)# 58/31 DWI Pathological analysis after Ivor-Lewis (n = 5), subtotal gastrectomy (n =52) and total gastrectomy (n =32)
Giganti 2016 [47] Italy (Caucasian) 52 P 68.5 (43-85) 33/19 DWI Pathological analysis after Ivor-Lewis (n = 2), subtotal gastrectomy (n =28) and total gastrectomy (n =22)
Joo 2015 [48] Korea (Asian) 47 P 61.5 (38–91) ND DWI Pathological analysis after curative or palliative gastrectomy and LN dissection
Hasbahceci 2015 [49] Turkey (Caucasian) 23 P 59.4 ± 10.9$ 11/12 DWI Pathological analysis after radical resection of gastric tumor with standard D1+ or D2 LN dissection
Zhou 2014 [50] China (Asian) 52 R 60 (28–80) 34/18 DWI Pathological analysis after D1 (n = 15), D2 (n =24) and D3 lymphadenectomy (n = 13)
Lei 2013 [51] China (Asian) 39 R 52 (31–82) 26/12 DWI Pathological analysis after surgery
Altini 2015 [52] Italy (Caucasian) 45 R 66 (44–86) 27/18 PET/CT Pathological analysis after surgery
Filik 2015 [41] Turkey (Caucasian) 31 R 58.9±12.6 24/7 PET/CT Pathological analysis after curative surgery including gastrectomy and lymph node dissection
Namikawa 2014 [53] Japan (Asian) 90 R 72 (19–89) 70/20 PET/CT Pathological analysis after gastrectomy: D2 (n = 56), D1 (n =25), D0 (n = 9)
Park 2014 [39] Korea (Asian) 74 R 67 (38–88) 56/18 PET/CT Pathological analysis after standard gastrectomy and regional LN dissection (at least D2 dissection)
Youn 2012 [40] Korea (Asian) 396 R 59 (27–86) 278/118 PET/CT Pathological analysis after radical subtotal or total gastrectomies (n = 384), open and closure (n = 4) and palliative surgery (n = 8)
Ha 2011 [21] Korea (Asian) 78 R 61 (31–85) 53/25 PET/CT Pathological analysis after standard lymphadenectomy (at least D2).
Kim 2011 [38] Korea (Asian) 71 R 58 (27–77) 53/25 PET/CT Pathological analysis after radical surgery such as total gastrectomy n = 30) or subtotal gastrectomy (n =41) in conjunction withlymphadenectomy
Oh 2011 [54] Japan (Asian) 136 R 64.4 ± 10.5 98/38 PET/CT Pathological analysis after gastrectomy
Yang 2008 [55] Japan (Asian) 78 R 65.6 ± 1.1 57/21 PET/CT Pathological analysis after radical gastrectomy (D1+beta for EGC, D2 for AGC)

#Data in brackets were represented as age range; $Data were represented as mean ± standard deviation. *D0, D1, D1+, D2 and D3 refers to the classification of LN dissection depending on the extent of lymph nodes removed at the time of gastrectomy. Abbreviations: DWI = diffusion weighted imaging; PET/CT = positron emission tomography/computed Tomography; P = prospective; R = retrospective; EGC = early gastric cancer; AGC = advanced gastric cancer; LN =lymph node; M = male; F = female; ND = not documented.