Grade | Feature 1 | Feature 2 | Feature 3 |
---|---|---|---|
1 | The liver tissue in the background (i.e. not directly adjacent to vessels) is not particularly bright | Blood vessels have bright white lines adjacent to their wallsb | The brightness of the lower tissue is similar to the upper tissued |
2 | The liver tissue in the background (i.e. not directly adjacent to vessels) is brighter than normal (grade 1)a | b | d |
3 | a | Blood vessels have white lines adjacent to their walls, but these are generally less bright than in grade 2 | d |
4 | a | Some blood vessels do not have white lines adjacent to their walls. Some vessels do have white lines adjacent to their walls | d |
5 | a | Most blood vessels do not have white lines adjacent to their wallsc | d |
6 | a | c | The lower tissue is slightly darker than the upper tissue |
7 | a | Almost none of the blood vessels have white lines adjacent to their walls | The lower tissue is clearly darker than the upper tissue |