Fig. 11
From: Assessment of hepatocellular carcinoma treatment response with LI-RADS: a pictorial review
Axial CT obtained (a) pretreatment: image in late arterial phase (AP) shows nonrim arterial phase hyperenhancement of a small peripheral LR-5 observation (arrow). b Immediately post radiofrequency ablation (RFA): unenhanced image shows hyperdense central cavity related to coagulated blood products (arrow). c 3 months post RFA: image in late AP shows unenhanced and enlarged cavity with resorption of blood products. The treated observation is categorized LR-TR Nonviable