X-ray tensor tomography

作者:Malecki A*; Potdevin G; Biernath T; Eggl E; Willer K; Lasser T; Maisenbacher J; Gibmeier J; Wanner A; Pfeiffer F
来源:EPL, 2014, 105(3): 38002.
DOI:10.1209/0295-5075/105/38002

摘要

Here we introduce a new concept for x-ray computed tomography that yields information about the local micro-morphology and its orientation in each voxel of the reconstructed 3D tomogram. Contrary to conventional x-ray CT, which only reconstructs a single scalar value for each point in the 3D image, our approach provides a full scattering tensor with multiple independent structural parameters in each volume element. In the application example shown in this study, we highlight that our method can visualize sub-pixel fiber orientations in a carbon composite sample, hence demonstrating its value for non-destructive testing applications. Moreover, as the method is based on the use of a conventional x-ray tube, we believe that it will also have a great impact in the wider range of material science investigations and in future medical diagnostics.