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Comparison between US and MR features in 112 individuals with US report.
| US features | All (N = 112) | Abnormal MRI (n = 52) | Normal MRI (n = 60) |
|---|---|---|---|
| Normal US | 13/112(12%) | 3/52 (6%) | 10/60 (17%) |
| US abnormalities | 99/112 (88%) | 48/52 (92%) | 51/60 (85%) |
| Comet-tail images | 79/99 (80%) | 32/48 (67%) | 47/51 (92%) |
| Intrahepatic stones | 43/99 (43%) | 32/48 (67%) | 11/51 (22%) |
| Common bile duct stones | 27/99 (27%) | 21/48 (44%) | 6/51 (12%) |
MR, magnetic resonance; MRI, MR imaging; US, ultrasound.
