Copyright ©2014 Baishideng Publishing Group Co.
World J Gastrointest Endosc. Jan 16, 2014; 6(1): 1-5
Published online Jan 16, 2014. doi: 10.4253/wjge.v6.i1.1
Table 1 Comparison of direct and dedicated cholangioscopy
Direct cholangioscopyDedicated high-definition cholangioscopy
Commercial availability of the endoscopeYesNo (prototypes)
Operating expenseLowHigh
Image qualityExcellentExcellent
Narrow band imaging capabilityYesYes
Required number of operatorsOneTwo
Irrigation capabilityYesLimited
Suctioning capabilityYesLimited
Size of accessory channel2 mm1.2 mm
Insertion into the bile ductDifficultEasy
Stability inside the bile ductUnstableStable
Access to proximal ductsNoYes