fig2

Figure 2. 78-year-old with HCV cirrhosis 3 months status post-MWA for LR 5 HCC segment 4a/b (images not shown). 1 month post-MWA, expected post-thermal ablation findings of central T1 precontrast hyperintensity, consistent with coagulation necrosis (A). There is no intralesional APHE (B) confirmed on subtraction (C), with no additional features on delayed phase (D), LR-TR nonviable (white arrows). Peripheral wedge-shaped area of geographic APHE surrounding the treatment zone, becomes isoenhancing on delayed phases, consistent with posttreatment perfusional changes (black arrows).