Radiologist-Defined Scoring Scale for Patient Images with Descriptor
| Rank | Scale | Description |
| 1 | Poor | Images nondiagnostic |
| 2 | Noisy | Widespread foci of extrahepatic noise. |
| 3 | Satisfactory | Sporadic small foci of extrahepatic noise. |
| 4 | Good | Lack of significant, spurious noise, confident extrahepatic activity is real |