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Figure 1: (a) Bone marrow (BM) segmentation of both iliac crests (bottom) and five lumbar vertebrae (top), using PET-CT images. Analyzed volumes are shown in green for the former and blue for the latter. (b) Metabolic activity trend patient by patient in the injected sites compared with remote BM; maximal SUVs in the iliac crests were slightly but significantly higher than in the lumbar spine. On the contrary, the same analysis (c) showed the opposite results in controls.