As a powerful molecular imaging technology,computed tomography (CT) is able to be used for cancer cell imaging in vitro and in vivo with the assistance of contrast agents.To form effective nanoscale CT contrast agents,cost-effective low-generation dendrimers have been proven to be used as either stabilizers or templates to synthesize gold nanoparticles (AuNPs) for tumor CT imaging [1,2].However,using low-generation dendrimers as templates to synthesize AuNPs for targeted tumor CT imaging has not been reported in the literature.