Preoperative prediction of microvascular invasion in hepatocellular carcinoma using ultrasound features including elasticity

Table 3 Comparisons of shear wave elastography results between microvascular invasion-negative and microvascular invasion-positive hepatocellular carcinomas

MVI	Emax of the periphery of tumors in m/s	Emax of the tumors in m/s
MVI negative, n = 86	1.38 (1.18-1.65)	2.14 (1.71-2.49)
MVI positive, n = 102	1.50 (1.31-1.88)	2.29 (2.00-2.63)
Z	2.879	2.312
P value	0.004	0.021

Emax: Maximal elasticity; MVI: Microvascular invasion.