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Figure 3b. Transverse high-field-strength two-dimensional fast low-angle shot GRE MR images (fast low-angle shot sequence, 222/2.6, 70° flip angle, 205 x 256 matrix, 30 x 40-cm field of view) obtained at 2-week follow-up show appearances of an RF-induced thermal ablation zone (arrowheads) at posterior aspect of interpolar region of the right kidney. (a) On unenhanced image, the ablation zone is hyperintense owing to hemorrhage. (b) On gadolinium-enhanced image, the ablation zone has enhancing margins.
