Preoperative prediction of hepatocellular carcinoma microvascular invasion based on magnetic resonance imaging feature extraction artificial neural network

Table 1 Clinical information of the 255 hepatocellular carcinoma patients in the study

Variables	MVI present (n = 150)	MVI absent (n = 105)	P value
Age	52.1	52.0	0.8551
Male sex, n (%)	118 (78.70)	80 (76.20)	0.3822
Basic condition			0.1712
Hepatitis C	5	6
Hepatitis B	132	86
Alcoholic liver	1	1
Multiple	12	12
AFP values	193.8	195.9	0.1661
AFP grade (+), n (%)3	68 (45.30)	44 (41.20)	0.5642
Differentiation			0.9882
Low	6	1
Medium-low	1	2
Medium	137	77
Medium-high	3	8
High	3	17
MVI positive, n (%)	111 (58.12)	40 (62.50)	0.5602

¹Statistics are analyzed using Mann-Whitney U test, respectively.

²Statistics are analyzed using χ², respectively.

³When the alpha-fetoprotein (AFP) value is greater than 10, we consider its AFP grade to be positive (+).

MVI: Microvascular invasion.

Table 2 Correlation analysis between related features and microvascular invasion

Variables	Mean	P value
Male, n (%)	198 (77.6)	0.001a
Age	52	0.619
AFP values	194	0.606
AFP grades, n (%)	112 (43.9)	0.495
Original_shape_MeshVolume	6819.940 (mm3)	0.104
Original_shape_Sphericity	0.734	0.008
Original_shape_MajorAxisLength	25.33151 (mm)	0.113

^aP < 0.001.

AFP: Alpha-fetoprotein.