Fig. 3

Number of PET/CT-positive joints (left panels) and CSUV (right panels) across disease activity categories based on the DAS28-CRP (upper panels) or CDAI (lower panels). PET-CT: positron emission computed tomography; CSUV: cumulative standard uptake value; DAS: disease activity score; CDAI: Clinical Disease Activity Index; CRP: C-reactive protein