Fig. 2From: Significant association between joint ultrasonographic parameters and synovial inflammatory factors in rheumatoid arthritisRheumatoid arthritis (RA) synovial tissue histopathologic appearances directly correlate with the echogenicity of the synovium detected by ultrasonography. a Low synovial echogenicity and corresponding histopathologic findings. b High synovial echogenicity and histopathologic appearancesBack to article page