ALB and neoplasm: The HSA-coordinated Pt-NPs were intratumorally injected at 250.0 μmol Pt/kg to evaluate their potential for in vivo CT imaging, and they demonstrated higher contrast enhancements at the tumor site than those obtained with Iopromide due to the higher X-ray attenuation coefficient of Pt compared to that of iodine and the excellent tumor retention of the NPs.