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Figure 15awxyz.  FDG uptake in healing bone. (a, b) Axial FDG PET images (shown from superior [top left] to inferior [bottom right]) (a) and a sagittal FDG PET image (b) obtained 6 weeks after cardiac surgery show FDG uptake (SUV = 3.3) in a healing sternum. (c) Axial FDG PET images (left image obtained at a higher level than right image) of a patient who experienced lateral fractures of two right ribs 3 weeks before imaging show FDG uptake (SUV = 2.3) in the healing fractures (arrows). Six weeks later, FDG uptake in the fractures had diminished slightly (SUV = 2.1).