Fig. 2

Same patient as in Fig. 1. Region of interest (ROI) placement using half-translucent polygonal ROIs on DWI b = 800 s/mm² (a-d) and contrast-enhanced MRI (e-h) for manual segmentation of synovium (a, e), joint effusion (b, f), femoral epiphyseal bone marrow (c, g) and upper calf muscle (d, h)