Fig. 4From: Contrast-enhanced ultrasonography–CT/MRI fusion guidance for percutaneous ablation of inconspicuous, small liver tumors: improving feasibility and therapeutic outcomeThe Kaplan-Meier curve of the local tumor progression (LTP) rate after radiofrequency ablation. (A) LTP rate according to the subgroups divided by tumor visibility. (B) LTP rate according to the contrast agent usedBack to article page