Fig. 1From: ASAS definition for sacroiliitis on MRI in SpA: applicable to children?Flow chart showing the number of patients with and without sacroiliitis according to MRI global diagnostic assessment of sacroiliitis and according to the ASAS definition for a positive MRI for sacroiliitis, both correlated with the final clinical diagnosis of JSpA. (MRIā=āMagnetic Resonance Imaging; JSpAā+ā= patients with Juvenile Spondyloarthritis; JSpA -: patients without Juvenile Spondyloarthritis; Global assessment sacroiliitis +: one or more features of sacroiliitis present on MRI; global assessment sacroiliitis -: no features of sacroiliitis seen on MRI; ASAS MRIā+ā= sacroiliitis present on MRI as defined by the Assessment of Spondyloarthritis International Society; ASAS MRI -: no sacroiliitis on MRI according to the Assessment of Spondyloarthritis International Society definition)Back to article page