Fig. 30

Axial T1-weighted MR in late arterial phase (AP) obtained (a) pretreatment: image shows recurrence (arrow) of a lesion previously treated with radiofrequency and transarterial chemoembolization (TACE) (arrowheads). b 2 months post stereotactic body radiotherapy (SBRT): image shows incomplete tumor regression. c Axial CT in late AP obtained 5 months post SBRT: image shows faint residual enhancement (arrow) that may represent expected enhancement pattern. The treated observation is categorized LR-TR equivocal. Note the ethiodized oil retention from previous TACE (arrowhead)