Potential of 18 F-FDG-PET as a valuable adjunct to clinical and response assessment in rheumatoid arthritis and seronegative spondyloarthropathies

Figure 2 The asymmetrical fluorodeoxyglucose uptake pattern in a newly diagnosed patient with ankylosing spondylitis. The asymmetrical heterogeneous fluorodeoxyglucose (FDG) uptake is noted right sternoclavicular, left hip and a solitary facetal joint in dorsal spine. High to intense FDG uptake is seen in soft tissue of right thigh (probably fascia lata) and right lower limb muscles. Even one could notice the soft tissue FDG activity in tendons of small joints of hands.