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Four-point grading score for the subjective assessment of DSA image quality
| Score | Description |
|---|---|
| 1 | Perfect visualization of all hepatic arteries including small intra-tumoral vessels |
| 2 | Visibility from the proper hepatic artery to the subsegmental branches |
| 3 | Visibility from the proper hepatic artery to the segmental branches |
| 4 | Visibility from the proper hepatic artery to the lobar arteries only |
