Figure 11b. HCC in a 78-year-old man with chronic liver disease and an elevated serum
-fetoprotein level. (a) Very early arterial phase US image obtained 21 seconds after contrast material injection shows an enhancing mass, with a feeding artery (large arrow) and perinodular arteries (small arrows) nearby. (b) Delayed arterial phase US image obtained 31 seconds after injection shows a homogeneously enhancing mass (arrows).