Table 3. DWI Performance for Categorical Treatment-Response Assessment.

	Sensitivity	Specificity	Accuracy
Diagnosis of improved inflammation*
Reader 1	88% (29/33)	25% (1/4)	81% (30/37)
Reader 2	85% (28/33)	75% (3/4)	84% (31/37)
Diagnosis of complete remission
Reader 1	79% (11/14)	74% (17/23)	76% (28/37)
Reader 2	86% (12/14)	78% (18/23)	81% (30/37)
Diagnosis of specific response category
Reader 1	NA	NA	54% (20/37)
Reader 2	NA	NA	65% (24/37)

Numbers in parentheses indicate number of index lesions.

^*Includes complete remission and reduced inflammation. DWI = diffusion-weighted imaging, NA = not applicable