Fig. 4
Images in a 56-year-old man with chronic hepatitis B virus infection. A–D Preoperative gadoxetate disodium–enhanced axial MRI scans show a 2.0-cm mass (NHHN) in segment VII, which shows moderate T2 hyperintensity (A), marked hyperintensity on DWI (b = 800 s/mm2) (B), without obvious enhancement on arterial phase image (C), marked hepatobiliary phase hypointensity (D). E–G Enhanced abdominal CT images of the patient 50 days after radiofrequency ablation treatment of tumor. A low-density ablation area was shown (E), and there was not any enhancement tissue in or along the margin of the treated lesion (F, G). Diagnosis was agreed upon by the 2 readers (LR-TR nonviable). H–K Gadoxetate disodium–enhanced axial MRI scans 67 days after tumor ablation, which shows T2 hyperintensity (H), marked hyperintensity on DWI (b = 800 s/mm2) (I), irregular thickened enhanced tissue area was found along the margin of the treated lesion (* in J), and marked hepatobiliary phase hypointensity (K). The recurrence-free survival for this patient was 60 days