Figure 4.

Sixty-seven-year-old male, residual tumor (arrows) close to inferior vena cava margin after US-guided RFA of HCC: MWA ablation. (a) Contrast-enhanced CT (CECT) axial image with segmentation of residual tumor to treat (fill white arrow); (b) fused images obtained using CECT and CBCT after US-guided MWA probe positioning into residual tumor (empty white arrow) with predicted ablation area overlaying and the segmented tumor visualized on CT image; (c) 1-month follow-up CECT demonstrated complete ablation of residual tumor treated (no residual hypervascular area).