Skip to main content
Egyptian Journal of Radiology and Nuclear Medicine
Fig. 4 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 4

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. 4

A 56-year-old male patient who underwent MWA for a right hepatic lobe HCC and imaged 3 months after the procedure. a Axial T2 WIs and b Axial T1 WIs showing the ablation zone within the right hepatic lobe elicits high T1 and T2 signal. c Diffusion-weighted images, d ADC map showed thick marginal area of restricted diffusion at the posterior margins of the ablation zone “yellow arrows” (ADC 1.1 × 10-3 mm2/s). e Axial T1 3D THRIVE during the arterial phase. f The arterial subtraction and g the delayed phase showing no evidence of APHE or washout corresponding to the area of diffusion restriction “false negative for diffusion”. However, a small enhancing nodule is noted posterior to the ablation zone. h PET CT fused image showed FDG uptake at the enhancing nodule “arrows” confirming the tumoral activity (LR-TR viable) while the area of diffusion restriction showed no FDG uptake confirming the dynamic MRI findings (LR-TR nonviable)

Back to article page