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

Figure 2 Shear wave elastography images in a pathologically confirmed hepatocellular carcinoma. A: Quality mode showed hepatocellular carcinoma (HCC) as green, indicating that the 2D-shear wave elastography image was of good quality; B: Velocity mode showed that the HCC was stiffer than the surrounding liver tissue. The speed barb was set as 0.5-4.0 m/s; C: Two circular regions of interest (with a diameter of 3 mm) were placed at the stiffest part of the HCC and at the periphery of the HCC; D: Maximal values of the two regions of interest were recorded as maximal elasticity.