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Fig. 15 | Insights into Imaging

Fig. 15

From: Assessment of hepatocellular carcinoma treatment response with LI-RADS: a pictorial review

Fig. 15

Axial T1-weighted fat-saturated MR in late arterial phase obtained (a) pretreatment: image shows arterial phase hyperenhancement (APHE) of a 18-mm LR-5 observation (arrow). b 6 weeks post microwave ablation (MWA): image shows two nonspecific APHE perilesional nodules possibly representing perfusional changes (arrowhead). At this point, treated observation is categorized LR-TR equivocal. c 3 months post MWA: image shows disappearance of nodules in treatment zone; the treated observation is now categorized LR-TR Nonviable

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