Fig. 4.
a Cholangiogram and b intraductal ultrasound to assess stricture. c Endoscopic view showing a radiofrequency ablation (RFA) catheter entering the bile duct. Fluoroscopic view showing endobiliary RFA procedures using 11 mm RF catheters in the d right intrahepatic duct (IHD) for 90 seconds, e left IHD for 120 seconds, and f common hepatic duct for 120 seconds at a power of 7 W and temperature of 80°C. g Successful deployment of a plastic stent after RFA.
