Gold NPs were prepared by reducing gold ions in the PEGylated dendrimer. The gold NPs were grown in the dendrimer to enhance photo-responsive properties. Results show that the gold NPs exhibit photocytotoxicity and blood pool enhancement in vivo, which suggests that the group's material is useful for both therapy and diagnosis, in other words theragnosis.

The researchers presented their CT imaging results in the journal Nanotechnology. Information on the material's photocytotoxicity towards HeLa cells can be found in Bioconjugate Chemistry.