Table 1 5-point subjective scoring criteria
Score | Criteria | Description | ||||
|---|---|---|---|---|---|---|
Image contrast | Vessel edges | Vessels and branches | Artifacts | Diagnosis | ||
1 | Very poor | Low | Blurred | Main and branch vessels unrecognizable. | Severe | Affecting |
2 | Poor | Poor | Slight rough | Main vessels recognizable but branches difficult to display. | Noticeable | Possibly affecting |
3 | Average | Acceptable | Relatively clear | Main vessels and some branches visible. | Mild | Not affecting |
4 | Good | Better | Clear | Main vessels and branches identifiable. | Fewer | Not affecting |
5 | Excellent | Excellent | Very clear | Main vessels and all branches Visible | No | Meeting clinical requirements |