Fig. 6

Irradiation pretreatment enhances the accumulation of PINPs@PM in the tumor site. a In vivo imaging of tumor-bearing mice at 24 h post injection of PINPs@PM. b In vitro imaging of PINPs@PM in tumors. c Infrared thermal images of tumor-bearing mice treated with PINPs@PM in the presence and absence of X-ray irradiation. d The maximal tumor temperature of PINPs@PM-treated mice after NIR treatment for different times