Abstract

This theoretical study focuses on the enhancement of efficiency for radiotherapy according to increase sensitivity enhancement ratio (SER). The improvement of SER was done by increasing the amount of absorbed dose in lung cancer without the surrounding health tissue due to presence (Gold, Gadolinium, silver and titanium) nanoparticles (NPs) using x-ray with energy range from (2) to (20) MeV. This causes increasing in SER percentages as follows (10.86%), (12.51%), (13.03%) and (13.59%) when using titanium, silver, gadolinium and gold as nanoparticles respectively depending on the type of nanoparticles.