Agreement between endoscopic retrograde cholangiography (ERC) and magnetic resonance cholangiography (MRC) on stricture type
| Stricture type | No of correct MRC gradings/ERC grading |
| I | 4/4 |
| II | 6/7 (1: undergraded as type I) |
| III | 4/7 (2: undergraded as type II; 1: MRC unsuccessful) |
| IV | 0/2 (1: undergraded as type III; 1: MRC unsuccessful) |
Overall agreement: 70% (78% after exclusion of two technically unsuccessful MRC attempts).