Fig. 2
Images of right talocrural joint level in a 42-year-old woman with peripheral spondyloarthritis. a Axial T1-weighted and b axial T2-weighted images show synovial thickening anterior to talus (arrows) and around the medial flexor tendon (dashed arrows). These are enhanced in the fat-saturated contrast enhanced T1-weighted image (c), and FDG uptake is corresponding to synovial thickening (d). Color Doppler ultrasonographic images at the right medial flexor tendon (e; short axis, f; long axis) also show tenosynovitis as a hypoechoic area with heterogenous hyperemia