3D imaging using combined neutron-photon fan-beam tomography: A Monte Carlo study

J Hartman; A Pour Yazdanpanah; A Barzilov; E Regentova

doi:10.1016/j.apradiso.2016.02.018

3D imaging using combined neutron-photon fan-beam tomography: A Monte Carlo study

Appl Radiat Isot. 2016 May:111:110-6. doi: 10.1016/j.apradiso.2016.02.018. Epub 2016 Mar 2.

Authors

J Hartman¹, A Pour Yazdanpanah², A Barzilov², E Regentova²

Affiliations

¹ University of Nevada, Las Vegas, NV 89154, USA. Electronic address: hartma43@unlv.nevada.edu.
² University of Nevada, Las Vegas, NV 89154, USA.

PMID: 26953978
DOI: 10.1016/j.apradiso.2016.02.018

Abstract

The application of combined neutron-photon tomography for 3D imaging is examined using MCNP5 simulations for objects of simple shapes and different materials. Two-dimensional transmission projections were simulated for fan-beam scans using 2.5MeV deuterium-deuterium and 14MeV deuterium-tritium neutron sources, and high-energy X-ray sources, such as 1MeV, 6MeV and 9MeV. Photons enable assessment of electron density and related mass density, neutrons aid in estimating the product of density and material-specific microscopic cross section- the ratio between the two provides the composition, while CT allows shape evaluation. Using a developed imaging technique, objects and their material compositions have been visualized.

Keywords: CT reconstruction; Combined neutron-photon imaging; MCNP5; Material discrimination; Monte Carlo modeling.