They are usually anechoic on ultrasound with posterior acoustic enhancement and water attenuated on non-contrast CT, ... They are fed by hepatic arteries and possess slow internal circulation.

Hepatic artery resistance index at doppler ultrasonography is a useful parameter of hepatic graft-vs-host disease after allogeneic stem cell transplantation. Transplant Proc 2010; 42 : 3717–3722.

More information: Quantification of Hepatic Steatosis by Ultrasound: Prospective Comparison to MRI Proton-Density Fat Fraction as Reference Standard, American Journal of Roentgenology (2022). DOI ...

According to ARRS' American Journal of Roentgenology (AJR), ultrasound-derived fat fraction (UDFF) is strongly associated with MRI proton-density fat fraction (PDFF) and provides high sensitivity ...