Score | Severity of Artifacts | Density of Muscles | Clarity of Inter-Muscular planes | Definition of the vertebral elements |
1 | Severe artifact, obvious distortion | Heterogeneous | Cannot be distinguished | Cannot be distinguished |
2 | Obvious artifact, mild distortion | Marked | Distinguishable but obscured | Distinguishable but obscured |
3 | Moderate | Moderate | Moderate | Moderate |
4 | Little artifact without obvious distortion | Mild heterogeneous | Blurred edges | Blurred edges |
5 | No artifact | Homogeneous | Clear and sharp edges | Clear and sharp edges |