Table 3.

Two observers’ mean sensitivity, specificity, and diagnostic accuracy for the diagnosis of MND using qualitative analysis. A test was considered positive if there was mild/marked hypointensity on T2 or T2*, mild or marked hyperintensity on T2 FLAIR, or moderately/markedly more hyperintensity on QSM. The last row shows the weighted kappa between both observers for each sequence.

	T2	T2*	T2 FLAIR	QSM
Sensitivity	53%	69%	34%	88%
Specificity	96%	54%	100%	80%
Accuracy	78%	60%	73%	83%
Kappa	0.66	0.80	0.89	0.89