Figure 1
Comparison between energy absorption-to-attenuation coefficient ratios calculated for cortical bone and lung tissue (ICRU, 1989) using the EPDL97 database (Cullen et al., 1997), as derived from Geant4 (version 9.5) simulations with the Livermore model [according to the method described by Freud et al. (2008)], and as given by NIST (Berger et al., 2010). |