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Case B. Transverse slices of radiotherapy dose distribution (A), fused PET/CT (B) and PSMA PET (C) at the level of the parotid and retropharyngeal glands, illustrating complete loss of PSMA uptake in pharyngeal wall glands and in the deep lobe of the left parotid gland (green arrows), which received a high dose. (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)
