Fig. 3From: Quantitative scintigraphy in discriminating sacroiliac joint physiological and pathological uptakeThirty-three years old male with ankylosing spondylitis. a X-ray radiography of sacroiliac joints (AP view) reveals sclerosis, irregularity, and narrowing of the RT SIJ and fused LT one. b Tc-99 m MDP whole-body bone scintigraphy (anterior and posterior views) shows increased uptake of both sacroiliac joints (right SII = 1.3, left SII = 1.4)Back to article page