Comparative Evaluation of ⁶⁸Ga-Citrate PET/CT and ¹⁸F-FDG PET/CT in the Diagnosis of Type II Collagen-Induced Arthritis in Rats

Figure 4

When the magnification is 10 × 10 (a), some serous fluid in the joint cavity can be seen exuding, accompanied by a large number of neutrophils infiltrating the area, which is a manifestation of suppurative inflammation. When magnification is 10 × 40 (b), neutrophils can be seen in the full field of vision, and lymphocytes and plasma cells are hardly visible.