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Signal characteristics of alar ligaments in the sagittal plane
| Reader 1 + 2 | κ Value (SE) | ||
|---|---|---|---|
| Low signal throughout entire cross-section, | 6.5% | 0.33 (±0.090) | |
| grade 0 | 39.5% | ||
| High signal in ≤1/3 of cross-section, | 33% | ||
| grade 1 | |||
| High signal in 1/3 to 2/3 of cross-section, | 45% | ||
| grade 2 | 60% | ||
| High signal in ≥2/3 of cross-section, | 15% | ||
| grade 3 | |||
| Not definable | 0.5% |
