Polychromatic iterative reconstruction algorithm for direct reconstruction of density information in X-ray CT

Jelle Dhaene (1) , Peter Moonen (2, 3) , Jan van den Bulcke (4) , Matthieu Boone (1) , Luc van Hoorebeke (1)

1 UGCT - Center for X-ray Tomography [Ghent]
2 DMEX - Développement de méthodologies expérimentales
3 LFCR - Laboratoire des Fluides Complexes et leurs Réservoirs
4 UGENT - Universiteit Gent = Ghent University

A method is presented to reconstruct quantitative material densities from X-ray CT data instead of reconstructing a linear attenuation coefficient in each voxel of the 3D volume. The polychromatic behavior of the complete system is included in the reconstruction method, as such calibration materials are not required and beam hardening artefacts are inherently eliminated from the reconstructed data.

Mots clés: X-ray CT; polychromatic reconstruction; densitometry; material characterization

Domaines: Traitement du signal et de l'image [eess.SP]

Jelle Dhaene, Peter Moonen, Jan van den Bulcke, Matthieu Boone, Luc van Hoorebeke. Polychromatic iterative reconstruction algorithm for direct reconstruction of density information in X-ray CT. 4th International Conference on Tomography of Materials and Structures (ICTMS 2019), Jul 2019, Cairns, Australia. ⟨hal-02175831⟩