Fig. 1From: Evaluation of active inflammation, chronic structural damage, and response to treatment of sacroiliitis in axial spondyloarthritis using the Spondyloarthritis research consortium of Canada scoring systemStudy flow diagram. axSpA: axial spondyloarthritis; TNF-α: tumor necrosis factor-alpha; MRI: magnetic resonance imaging; AS: ankylosing spondylitis; nr-axSpA: non-radiographic axial spondyloarthritisBack to article page