Table 1.

The basic information and detail distribution of each dataset

		Training set	Test set	P value
Category A: HCC	No. of lesions/No. of patients	88/79	23/22
	Age (median [range]) in yr	49 (24-81)	49.5 (33-70)	0.726
	Sex (percentage of women)	6/79 (7.6%)	5/22 (22.7%)	0.044
	Size of lesion (mean ± SD) in mm	60.6 ± 36.3	63.0 ± 45.4	0.789
	Histopathologic diagnosis (No. of lesions/No. of patients)
	Surgery	79/70	20/19
	Biopsy	9/9	3/3
Category B: Metastases	No. of lesions/No. of patients	89/34	23/14
	Age (Median [range]) (yr)	58.5 (23-79)	58 (23-79)	0.937
	Sex (Percentage of women)	8/34 (23.5%)	6/14 (42.9%)	0.181
	Size of lesion (mean ± SD) in mm	23.0 ± 13.9	22.7 ± 11.5	0.937
	Primary tumors (No. of lesions/No. of patients)
	Colorectal cancer	40/20	10/6
	Gastric carcinoma	13/3	3/2
	Breast cancer	2/1	0/0
	Lung cancer	14/4	4/2
	Thyroid cancer	16/4	4/2
	Malignant jejunal stromal tumor	2/1	1/1
	Duodenal papillary carcinoma	0/0	1/1
	Laryngocarcinoma	2/1	0/0
Category C: Benign non-inflammatory FLLs	No. of lesions/No. of patients	128/97	34/32
	Age (median [range]) in yr	34 (17-82)	34 (10-74)	0.729
	Sex (percentage of women)	52/97 (53.6%)	16/32 (50.0%)	0.723
	Size of lesion (mean ± SD) in mm	41.9 ± 30.5	52.9 ± 28.4	0.060
	Histological type (No. of lesions/No. of patients)
	Hemangioma	55/35	15/15
	FNH	67/58	17/15
	Adenoma	6/4	2/2
Category D: Hepatic abscesses	No. of lesions/No. of patients	105/77	27/20
	Age (median [range]) in yr	54 (4-82)	55 (25-82)	0.936
	Sex (percentage of women)	24/77 (31.2%)	7/20 (35.0%)	0.743
	Size of lesion (mean ± SD) in mm	64.5 ± 34.9	63.8 ± 24.2	0.916

FLLs: Focal liver lesions; FNH: Focal nodular hyperplasias.