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A, T1-weighted, Gd-enhanced 1H MR image of a canine neck squamous cell carcinoma tumor, marked with a red line. B, C, 18F-FDG-PET image shows variable 18F-FDG uptake in the tumor (B) that does not correspond to regions of high lactate production seen in the 13C MR image (C). (Reproduced with permission from Reference 154)
