Fig. 7

A 60-years-old male patient with cirrhosis having RF ablation for right lobe focal lesion, dynamic MRI was done with subtraction technique 1 month after RF ablation, a, b coronal and axial T1WI with the ablated focal lesion appearing heterogeneously Bright, c early post contrast thrive showing bright inconspicuous crescentic area along the medial margin of the hypointense lesion. d Delayed thrive the marginal area being isointense to the adjacent liver parenchyma; e subtraction augmented the presence of encasing crescentic lesion along the medial margin (yellow arrow) increasing the degree of confidence and accuracy. f Inspite of absence of diffusion restriction, based on subtraction findings with active tumoral residue Follow-up after 6 months revealed increase in tumor size, h T1 post contrast increased enhancing residual tumor implicating the upper and lateral margins as well (red arrow), i also confirmed by subtraction