Figure 1
From: Imaging and radiation effects of gold nanoparticles in tumour cells

Graph showing relationship between experimental observations of clonogenic dose modification factor for increasing (monoenergetic) photon energy and predictions made using the local effect model for 20 nm gold nanoparticles (solid line).
This works measured dose modification factor for MDA-231 cells containing 500 μg/ml of 1.9 nm AuroVist irradiated with 3 Gy (▀). Dose modification factor at 3 Gy for aortic endothelial cells containing 1.9 nm AuroVist at a mass concentration of 197 μg/ml (X)35.