Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Three types of cholangioscopy system
| “Mother–baby” dual-operator cholangioscopy | Single-operator cholangioscopy (SpyGlass DS system) | Direct peroral cholangioscopy (ultra-slim endoscope) | |
|---|---|---|---|
| Endoscopist | 2 | 1 | 1 |
| Additional endoscope system | Yes | Yes | No |
| Scope diameter, mm | 3.3–3.5 | 3.6 | 5–6 |
| Accessory channel, mm | 1.2 | 1.2 | 2 |
| Irrigation channel | No | Yes | No |
| Cost | High | High | Low |
| Image quality | High | Intermediate | High |
