Figure 4.

The enhanced chest CT was re-examined after WMA. CT images (A) and (B) were 2 months after the first ablation and 3 months after the second ablation, respectively. The contrast agents in the venous phase were locally enhanced without exception, suggesting incomplete local tumor ablation. (C) and (D) were conducted 3 months after the third ablation, while (E) and (F) were conducted 12 months after the third ablation. There was no enhancement of contrast agents during the venous phase, suggesting complete tumor ablation. CT, computed tomography; MWA, microwave ablation.