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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 2 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 2

From: The role of dynamic and diffusion MR imaging in therapeutic response assessment after microwave ablation of hepatocellular carcinoma using LI-RADS v2018 treatment response algorithm

Fig. 2

A 61-year-old male patient who underwent MWA for a right hepatic lobe HCC and imaged 6 months after the procedure. a Axial T1 WIs and b Axial SPAIR WIs showing the ablation zone within the right hepatic lobe elicits high T1 and low T2 signal (coagulation necrosis). Multiple nodules are seen at the margins of the lower ablation zone eliciting low T1 and high T2 signal. Note the focal biliary dilatation and the thin rim of perihepatic collection (complications of the procedure). c Diffusion-weighted images and d ADC map showed restricted diffusion of the small nodules at the margins of the ablation zone (nodular type of recurrence). The center is free being of low signal in the diffusion WIs and high signal in the ADC. e Axial T1 3D THRIVE during the arterial phase and f the delayed phase showing multiple enhancing nodules during the arterial phase with washout in the portal and delayed phases denoting tumoral activity (LR-TR viable). The center of the ablation zone is not enhancing

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