Fig. 4From: MRI thresholds for discrimination between normal and mild temporomandibular joint involvement in juvenile idiopathic arthritisGraphic representation comparing synovial enhancement ratios of mild JIA, moderate/severe JIA, rheumatologic and non-rheumatologic controls. The enhancement ratios of the two control groups are shown in (a) and (b). The 1.5Â T and 3.0Â T non-rheumatologic control cases have been grouped together in this figure. TMJs with mild or moderate/severe synovitis are shown in (c) and (d), respectively. It is interesting to note that there is more variability in the range of enhancement ratios for the moderate/severe JIA group as compared to the other groupsBack to article page