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- Title
X-ray absorption, phase and dark-field tomography through a beam tracking approach.
- Authors
Vittoria, Fabio A.; Endrizzi, Marco; Diemoz, Paul C.; Zamir, Anna; Wagner, Ulrich H.; Rau, Christoph; Robinson, Ian K.; Olivo, Alessandro
- Abstract
We present a development of the beam-tracking approach that allows its implementation in computed tomography. One absorbing mask placed before the sample and a high resolution detector are used to track variations in the beam intensity distribution caused by the sample. Absorption, refraction, and dark-field are retrieved through a multi-Gaussian interpolation of the beam. Standard filtered back projection is used to reconstruct three dimensional maps of the real and imaginary part of the refractive index, and of the dark-field signal. While the method is here demonstrated using synchrotron radiation, its low coherence requirements suggest a possible implementation with laboratory sources.
- Subjects
X-ray absorption; COMPUTED tomography; ABSORPTION; INTERPOLATION; SYNCHROTRON radiation
- Publication
Scientific Reports, 2015, p16318
- ISSN
2045-2322
- Publication type
Article
- DOI
10.1038/srep16318