Characterization of focal liver masses using acoustic radiation force impulse elastography

Figure 1 Measurement of acoustic radiation force impulse value within the region of interest of a focal liver mass. The shear wave velocity measured when the region of interest box was placed within the mass.

Figure 2 Recruitment algorithm.

Figure 3 The flow of histological diagnosis. The values on arrows indicate the number of patients who obtained diagnoses differing from those pre-biopsy diagnoses after liver biopsy.

Figure 4 Acoustic radiation force impulse values of malignant masses, hepatocellular carcinoma, and benign masses. A: Acoustic radiation force impulse (AFRI) value of a focal liver mass; B: Sum of the ARFI values of liver mass and the surrounding liver parenchyma. HCC: Hepatocellular carcinoma.