Fig. 14
From: Assessment of hepatocellular carcinoma treatment response with LI-RADS: a pictorial review
Axial CT in late arterial phase obtained (a) pretreatment: image shows nonrim arterial phase hyperenhancement (APHE) of a 2-cm observation in segment VII (arrow). b 6 weeks post microwave ablation (MWA): image shows large hypodense cavity (arrow) with margins covering the targeted lesion. c 6 months post MWA: image shows well-defined cavity (arrow) with decreased diameter and no APHE. The treated observation is categorized LR-TR Nonviable