Definition of biliary sludge
| Biliary sludge | Literature-based findings | Expert agreement | Audience agreement |
| Localisation | Gallbladder only | 0% | – |
| Bile duct only | 0% | – | |
| Gallbladder and bile duct | 100% | 89.7% | |
| Sonomorphology | Discrete, hyperechoic material (GB+CBD), without acoustic shadowing, sediment in the most dependent part of the GB | 96.15% | 70.6% |
| Imaging method of choice* | EUS | 93% | – |
| Transabdominal ultrasound | 4% | – |
*There is an obvious bias in this voting as first, mainly EUS experts were involved in the questionaire and second we did not discriminate between findings in the CBD and the gallbladder. Transabdominal ultrasound might be the method of choice for gallbladder findings.
CBD, common bile duct; EUS, endoscopic ultrasound; GB, Gallbladder .