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Our findings indicate that the in vitro and in vivo characteristics of (111)In-DTPAGlu-G-CCK8 are favorable for CCKBR imaging, as the peptide shows high-affinity binding to the receptor, is internalized in CCKBR-expressing cells, and shows avid uptake in CCKBR-overexpressing xenografts, with rapid clearance of unbound radioactivity through the kidneys. Furthermore, the ease of synthesis, high labeling efficiency, and chemical stability of DTPAGlu make this chelating moiety an ideal candidatepmid:15001692 fatcat:vtn3o2lpkrdjvbvjheqtlpifde