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Axial anti-18F-FACBC PET (A) and PET/CT (B) images in a 67-y-old patient with PSA relapse show intense activity in the left external iliac nodes (black arrow). In the same patient, axial 111In-capromab pendetide SPECT (C) and SPECT/CT (D) images demonstrate no significant activity in this region (white arrow). Reproduced with permission from Schuster et al [52].
