Martin Bech
Universitetslektor
Non-iterative Directional Dark-field Tomography
Författare
Summary, in English
Dark-field imaging is a scattering-based X-ray imaging method that can be performed with laboratory X-ray tubes. The possibility to obtain information about unresolvable structures has already seen a lot of interest for both medical and material science applications. Unlike conventional X-ray attenuation, orientation dependent changes of the dark-field signal can be used to reveal microscopic structural orientation. To date, reconstruction of the three-dimensional dark-field signal requires dedicated, highly complex algorithms and specialized acquisition hardware. This severely hinders the possible application of orientation-dependent dark-field tomography. In this paper, we show that it is possible to perform this kind of dark-field tomography with common Talbot-Lau interferometer setups by reducing the reconstruction to several smaller independent problems. This allows for the reconstruction to be performed with commercially available software and our findings will therefore help pave the way for a straightforward implementation of orientation-dependent dark-field tomography.
Avdelning/ar
- X-ray Phase Contrast
Publiceringsår
2017-12-01
Språk
Engelska
Publikation/Tidskrift/Serie
Scientific Reports
Volym
7
Issue
1
Dokumenttyp
Artikel i tidskrift
Förlag
Nature Publishing Group
Ämne
- Radiology, Nuclear Medicine and Medical Imaging
- Other Physics Topics
Status
Published
Forskningsgrupp
- X-ray Phase Contrast
ISBN/ISSN/Övrigt
- ISSN: 2045-2322