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Fig. 3 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 3

From: Role of DWI in evaluation of HCC after radiofrequency ablation compared to dynamic MRI using MRI (3 T)

Fig. 3

Male patient 64 years old with HCC in segment VII underwent RFA 8 months ago, MRI study was done after 14 weeks after ablation, and it revealed low ADC value and diffusion restriction in a viable lesion. The lesion showed a low signal at T1WI (a), a high signal at T2WI (b); at the DCE series the lesion showed peripheral thick arterial phase hyperenhancement (c) and gradual washout at portal phase (d) and delayed phase (e), while the center of the lesion showed no enhancement at all DCE phases; DWI b 500 (f) and b 800 (i) showed marginal thick restricted diffusion, with low signal at ADC mapping series (g, h) at its margin (ADC value = 0.98 × 10−3 mm2/s) and bright signal at its center (ADC value = 2.4 × 10−3 mm2/s)

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