Fig. 1
![Fig. 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40792-021-01213-8/MediaObjects/40792_2021_1213_Fig1_HTML.jpg)
a CT image of hepatocellular carcinoma at segment 6/7. It was well enhanced in the arterial phase (arrow). b CT image of post-RFA for hepatocellular carcinoma at segment 6/7
a CT image of hepatocellular carcinoma at segment 6/7. It was well enhanced in the arterial phase (arrow). b CT image of post-RFA for hepatocellular carcinoma at segment 6/7