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Representative maximum-intensity projection from PET/CT scans comparing [55Co]Co-DOTATATE (A–C), [64Cu]Cu-DOTATATE (D–F), and [68Ga]Ga-DOTATATE (G). Arrows indicates tumor in each animal. Decrease in background was observed for [55Co]Co-DOTATATE for late imaging. Higher relative liver uptake with time was observed for [64Cu]Cu-DOTATATE, whereas high bladder uptake was observed for [68Ga]Ga-DOTATATE. All images are scaled to maximum uptake in tumor.
