Figure 2
From: Clinical value of whole-body PET/CT in patients with active rheumatic diseases
Typical18 F-fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) and magnetic resonance imaging (MRI) findings in patients with spondyloarthritis (SpA), enthesitis of the ischial tuberosity, and sacroiliitis. (A) Whole-body FDG-PET/CT in a patient with SpA reveals FDG accumulation in the ischial tuberosity (A1). MRI (fat-suppressed, T1-weighted imaging) reveals enhancement in the areas surrounding the ischial tuberosity, consistent with enthesitis (A2-3). (B) FDG accumulation suggestive of sacroiliitis in the sacroiliac joint in patients 1 and 2 on FDG-PET/CT (B1). MRI (fat-suppressed, T1-weighted imaging) identifies contrast enhancement in patient 2 (B2).