1. Peroral Cholangioscopy: Diagnostic and Therapeutic Applications
Jong Ho Moon, Grischa Terheggen, Hyun Jong Choi, Horst Neuhaus 
Gastroenterology 
Volume 144, Issue 2, Pages (February 2013)
DOI: /j.gastro
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2. Figure 1
Intraductal balloon-guided direct peroral cholangioscopy. (A) Placement of a guidewire with or without a 5-F drainage tube within a branch of the intrahepatic duct. (B) Insertion of an ultraslim upper endoscope through a guidewire up to the orifice of the ampulla of Vater. (C) Insertion and anchoring of a 5-F balloon catheter after ballooning over a guidewire. (D) Advancement of an ultraslim endoscope over a fixed balloon catheter. (E) Radiograph showing an ultraslim endoscope on the proximal biliary tree.
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2013 AGA Institute Terms and Conditions

3. Figure 2
Peroral cholangioscopic findings of intraductal biliary tumors. Tumor vessel on the orifice of the cystic duct by white-light (A) and narrow-band (B) imaging. Superficial flat, granular elevated lesions of an intraductal papillary neoplasm in the bile duct (IPN-B) by white-light (C) and narrow-band (D) imaging.
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2013 AGA Institute Terms and Conditions

4. Figure 3 Cholangioscopy-guided laser lithotripsy with SpyGlass system.
Gastroenterology  , DOI: ( /j.gastro )
Copyright © 2013 AGA Institute Terms and Conditions