Fig. 2

a WB images immediately (left), 5 h (middle) and 24 h (right) pi of 706 MBq ^99mTc-S-HYNIC CZP. b Static images (at 5 h pi) of the hands in a female suffering axial SpA. This patient presented with only radiographic axial involvement and had no signs of peripheral articular involvement. No enhanced tracer uptake in peripheral joints or the axial skeleton was noted