Table 1.
Technical characteristics of the available cholangioscopy systems.
| Mother–Baby Scope System | Direct Videocholangioscopy with Ultraslim Gastroscope (D-POC) | Digital Single-Operator Cholangioscopy (D-SOC) | Short D-SOC | |||
|---|---|---|---|---|---|---|
| EVIS LUCERA ELITE Video Cholangioscope Olympus | SpyGlass™ DS II Direct Visualization System Boston Scientific | eyeMAX Micro-Tech™ | SpyGlass™ Discover Boston Scientific | Olympus CHF-CB30S | ||
| Required endoscopist | 2 operators | 1 operator | 1 operator | 1 operator | 1 operator | 1 operator |
| Outer diameter | 3.4 mm | 5–5.9 mm | 3.6 mm | 3–3.6 mm | 3.6 mm | 2.8 mm |
| Accessory channel | 1.2 mm | 2 mm | 1.2 mm | 1.2–2 mm | 1.2 mm | None/ |
| Length | 192 cm | 110–170 cm | 286 cm | 220 cm | 65 cm | 70 cm |
| Angulation function | Two way, 70° | Four way, up to 210° | Four way, 30° | Four way, 30° | Four way, 45° | Two way, 120° |
| Quality of images | Enhanced Near-Point Image Quality | High-definition resolution | High-definition resolution | High-definition resolution | Full HD | Fiber-optic |
| Image-enhanced function system | Available | Available | Not available | Not available | Not available | Not available |
D-POC, direct peroral cholangioscopy.