Table 1.

Characteristics of the 11 included studies.

Study	Year	Country	Patients(Tumors) (n)	Age	Imaging methods	P (non-smooth) (%)	TP	FP	FN	TN	QUADAS Score
Kim et al.11	2009	Korea	66(70)	55	MR	39	19	8	16	27	11
Ariizumi et al.13	2011	Japan	61(61)	67	MR	39	10	14	1	36	9
Chou et al.12	2012	China	102(102)	60	CT	39	33	7	17	45	13
Witjes et al.16	2012	Netherlands	64(64)	56	MR	28	14	4	31	15	6
Chou et al.10	2014	China	102(102)	63	CT	53	49	5	11	37	12
Xu et al.29	2014	China	109(109)	53	MR	18	8	12	31	58	13
Ahn et al.17	2015	Korea	51(78)	52	MR	40	11	20	7	40	11
Lei et al.19	2016	China	707(707)	52	MR	17	33	90	178	406	10
Renzulli et al.15	2016	Italy	125(140)	62	CT/MR	59	75	8	15	42	8
Wu et al.14	2016	Japan	79(79)	70	CT/MR	38	13	17	2	47	9
Yang et al.18	2016	China	136(136)	56	MR	39	24	29	20	63	7

Patients (Tumors) (n): TP, FP, FN and TN referred to tumor number. Number outside the bracket was that of patients, and inside the bracket was that of tumor number; MR: Magnetic Resonance Imaging; CT: Computed Tomography; P (non-smooth) (%): percentage of patients with a non-smooth tumor margin on preoperative imaging test; TP: true-positive, FP: false-positive, FN: false-negative, TN: true-negative.