CCKBR and neoplasm: Figure 4A demonstrates the NanoSPECT/CT images of the A431-CCK2R (−)/A431-CCK2R (+) tumor-bearing mice injected with [177Lu]Lu-DOTA, [177Lu]Lu-DOTA-PP-F11N, [177Lu]Lu-DOTA-INER-PP-F11N-1, or [177Lu]Lu-DOTA-INER-PP-F11N-2 at various time points.