Though it was not targeted, the accumulation and prolonged contact with tumor cells led to a similar result.537 Furthermore, pEGFR-targeted Ba2GdF7 NPs, a contrast agent that can be eliminated by the kidneys, were recently developed by Feng et al. By binding to EGFR-targeted peptides, this agent is intended to target tumors in MR/CT dual-mode imaging. Here, EGFR is linked to neoplasm.