Monte Carlo simulation of the radiographic imaging procedure for electronically designed phantoms

This paper presents a software simulation package of the entire X-ray projection radiography process including beam generation, absorber structure and composition, irradiation set up, radiation transport through the absorbing medium and image formation. This software tool is an augmented version of a previously presented system with expanded range of application by the implementation of Monte Carlo approach for the simulation of the radiation interaction at the absorber and the detector. Phantoms are created as composite objects from geometrical or voxelized primitives and can be subjected to simulated irradiation process. The acquired projection images represent the two dimensional spatial distribution of the energy absorbed in the detector and are formed at any geometry, taking into account energy spectrum, beam geometry and detector response.