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Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences, 2015-06, Vol.373 (2043), p.20140396
Scatter analysis and correction for ultrafast X-ray tomography
Ist Teil von
Philosophical transactions of the Royal Society of London. Series A: Mathematical, physical, and engineering sciences, 2015-06, Vol.373 (2043), p.20140396
Ort / Verlag
England: The Royal Society Publishing
Erscheinungsjahr
2015
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
Ultrafast X-ray computed tomography (CT) is an imaging technique with high potential for the investigation of the hydrodynamics in multiphase flows. For correct determination of the phase distribution of such flows, a high accuracy of the reconstructed image data is essential. In X-ray CT, radiation scatter may cause disturbing artefacts. As the scattering is not considered in standard reconstruction algorithms, additional methods are necessary to correct the detector readings or to prevent the detection of scattered photons. In this paper, we present an analysis of the scattering background for the ultrafast X-ray CT imaging system ROFEX at the Helmholtz-Zentrum Dresden-Rossendorf and propose a correction technique based on collimation and deterministic simulation of first-order scattering.