Association of DR and loss modulus (G″) with histological activity with up to stage F2 fibrosis. Relationship between the DR and (a1) histological activity, (a2) ballooning, and (a3) lobular inflammation in patients with all stages of fibrosis with up to stage F2 fibrosis. Relationship between the G″ and (b1) histological activity, (b2) ballooning, and (b3) lobular inflammation in patients. DR, damping ratio