Fig. 4
From: Proton beam therapy for hepatocellular carcinoma with bile duct invasion
Proton beam therapy for Case 1 and computed tomography images during the follow-up period. (A-C) Dose distribution. The iso-dose lines represent 10–95% of the prescription dose from outside to inside. (D-I) Computed tomography images taken during follow-up 20 months from the start of proton beam therapy did not show any viable lesions and revealed the improvement of dilated bile duct in the liver parenchyma in early phase (D-E) and equilibrium phase (G-I).