Fig. 4

Left: Static images in a man suffering psoriatic arthritis, acquired approximately 5 h pi of 99mTc-S-HYNIC CZP. Uptake in the metacarpophalangeal, proximal and distal interphalangeal joint of the right second digit is observed, compatible with dactylitis. Right: Tracer uptake 5 h pi in both the joints and the accompanying flexor tendon in a female suffering psoriatic arthritis with clinically dactylitis of the fourth left digit