Interobserver agreement in the interpretation of muscle MRI findings
| Kappa statistics, 95% CI | ||
| STIR (n=88) | Gd-T1WI (n=79) | |
| MRI findings | ||
| Subcutaneous HSI | 0.98 (0.93 to 1.00) | 0.97 (0.93 to 1.00) |
| Fascial HSI | 0.66 (0.50 to 0.82) | 0.72 (0.57 to 0.87) |
| Peripheral distribution | 0.77 (0.64 to 0.91) | 0.77 (0.63 to 0.91) |
| Diffuse distribution | 0.70 (0.55 to 0.86) | 0.81 (0.67 to 0.94) |
| Patchy distribution | 0.72 (0.56 to 0.89) | 0.71 (0.54 to 0.89) |
| Honeycomb pattern | 0.77 (0.62 to 0.92) | 0.79 (0.64 to 0.94) |
| Foggy pattern | 0.79 (0.62 to 0.97) | 0.86 (0.70 to 1.00) |
| SHSI pattern | 0.82 (0.63 to 1.00) | 0.72 (0.47 to 0.98) |
STIR, short-tau inversion recovery;Gd-T1WI, gadolinium-enhanced fat-suppressed T1-weighted imaging;HSI, high signal intensity;SHSI, strong high signal intensity.