| Spatial resolution |
|
|
| Liver edge and pancreas margin sharpness |
1–5 |
Score 1, very poor; score 2, suboptimal; score 3, acceptable; score 4, above average; score 5, excellent |
| Hepatic vessel conspicuity |
1–5 |
Score 1, non-diagnostic or not visible; score 2, minimal diagnostic information; score 3, visible anatomy with moderate blurring; score 4, good diagnostic quality with minimal blurring; score 5, excellent diagnostic quality with sharp borders |
| Bile duct conspicuity |
1–5 |
Score 1, bile ducts not delineated; score 2, partly delineated with blurry margin; score 3, entire biliary system is shown with blurry margin; score 4, 2nd order branch was delineated with blurry margin or 1st order branch is delineated with clear margin; score 5, 1st and 2nd order branches are well delineated with clear margin |
| Noise and artifact |
|
|
| Image noise |
1–5 |
Score 1, unacceptable; score 2, increased noise with above average level, affecting diagnosis; score 3, acceptable; score 4, good; score 5, excellent |
| Aliasing artifact |
1–3 |
Score 1, multiple remained unzip artifacts; score 2, granular band at center; score 3, none |
| Motion artifact |
1–5 |
Score 1, very severe, interfering organic anatomy interpretation; score 2, severe, interfering internal structure; score 3, moderate, interfering evaluating fine structure; score 4, mild artifacts; score 5, none |
| Fat suppression deficiency |
1–5 |
Score 1, unreadable (signal inversion); score 2, of partial signal inversion with more than 25% of images; score 3, with 10–25% of image or slice; score 4, with less than 10% of image or slice; score 5, without signal inversion |
| Overall artifact level |
1–5 |
Score 1, unreadable; score 2, poor; score 3, acceptable; score 4, good; score 5. excellent |
| Overall image quality |
1–5 |
Score 1, unreadable; score 2, poor; score 3, acceptable; score 4, good; score 5, excellent |
