Monte-Carlo simulation of projections in computed tomography
Publication, 2007
Outline
M. Mantler, B. Chyba, M. Reiter - Monte-Carlo simulation of projections in computed tomography - Denver X-Ray Conference 2007, Denver, United States of America, 2007, pp. 6
Abstract
Results from Monte Carlo simulations of 2D-projections for a simple real sample (an aluminium
cube with a cylindrical hole filled by air or steel) in a realistic experimental environment are
presented. A meaningful comparison with measurements was therefore possible. Coherent and
incoherent scattering as well as excitation of fluorescent radiation are accounted for; multiple
sequences of these interactions are followed up to a selectable order. Such simulations are
important aids to modern metrological applications of computed tomography where the
dimensional accuracy of hidden or inaccessible components of work pieces is determined. The
complex process requires a high level of optimization of the instrumental parameters for each
sample type whereby the accurate simulation of the physical interactions between X-rays and the
sample material is a supplement and alternative to time consuming measurements.