Table 7. Agreement between MRI and US for Grading Fatty Infiltration by Using Dichotomous Scales.

Muscle	Agreement–Weighted Kappa (95% CI)
	Long axis	Short axis
Supraspinatus
Echogenicity	0.48	0.51
Architecture	0.66	0.63
Infraspinatus
Echogenicity	0.55	0.50
Architecture	0.64	0.68

MRI, magnetic resonance imaging; US, ultrasonography, CI: confidence interval.