Delineation of fine structures using a semiquantitative scale
| Scale (0–4) | |
|---|---|
| 4 | Excellent; very good color contrast and discriminates with surrounding structure |
| 3 | Relatively good; very good color contrast and discriminates with surrounding structure |
| 2 | Enough good contrast with surrounding structure |
| 1 | Subtle, faint contrast with surrounding structure |
| 0 | Colors at border area are mixed; impossible to make diagnosis |