Differential diagnosis of different types of solid focal liver lesions using two-dimensional shear wave elastography

Figure 1 Two-dimensional shear wave elastography images in patients with focal liver lesions. A: Tumor shown on quality mode as green indicated that the quality of two-dimensional shear wave elastography image was up to standard; B: Tumor shown in velocity mode, speed bar set at 0.5-4.0 m/s; C: Two circular regions of interest (ROIs, with 3 mm diameter) placed at the stiffest site in the tumor and at the periphery of tumor; D: Maximum values of the two ROIs recorded as maximal elasticity.

Figure 2 Receiver operating characteristic curve of maximum elasticity for malignant and benign focal liver lesions.

Figure 3 Ultrasound and pathologic images in a 51-year old male patients with hepatocellular carcinomas. A: A tumor shown on conventional ultrasound were diagnosed as undetermined; B: Tumor shown as stiffer, compared with surrounding liver tissue in two-dimensional shear wave elastography velocity mode; C: Maximal elasticity of the tumor was higher than 1.905 m/s and the tumor was diagnosed as malignant; D: Pathological examination confirmed the tumor as hepatocellular carcinomas (HE, × 200).