Fig. 3From: MRI contributes to accurate and early diagnosis of non-radiographic HLA-B27 negative axial spondyloarthritisThe area under the curve (AUC) for fJSW was 0.736, p < 0.001 (A); that for triple-positivity for sclerosis, erosion, and fJSW was 0.724, p < 0.001 (B). fJSW focal joint space widening, MRI magnetic resonance imaging, SIJ sacroiliac jointBack to article page