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Coronal whole-body projection images of a patient who had received an oral barium contrast agent before the PET scan. (A) CT image showing the accumulation of barium contrast agent in the bowel, (B) PET scan after CT attenuation correction showing hot spot of FDG activity just above the bladder at the location of the bowel, and (C) PET scan without CT attenuation correction no longer demonstrating a hot spot above the bladder.
