Fig. 1

CT findings before proton beam therapy. a A hepatic tumor with a diameter of 16.0 cm is observed in the right lobe. b The tumor is accompanied by portal vein tumor thrombosis in the main trunk (black arrowheads)
CT findings before proton beam therapy. a A hepatic tumor with a diameter of 16.0 cm is observed in the right lobe. b The tumor is accompanied by portal vein tumor thrombosis in the main trunk (black arrowheads)