Modregger, P;
Meganck, J;
Hagen, CK;
Massimi, L;
Olivo, A;
Endrizzi, M;
(2019)
Improved iterative tomographic reconstruction for x-ray imaging with edge-illumination.
Physics in Medicine and Biology
10.1088/1361-6560/ab439d.
(In press).
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Endrizzi_OA_Modregger+et+al_2019_Phys._Med._Biol._10.1088_1361-6560_ab439d.pdf - Accepted Version Download (643kB) | Preview |
Abstract
Iterative tomographic reconstruction has been established as a viable alternative for data analysis in phasesensitive x-ray imaging based on the edge-illumination principle. However, previously published approaches did not account for drifts of optical elements during a scan, which can lead to artefacts. Up to now, the strategy
 to reduce these artefacts was to acquire additional intermediate flat field images, which were used to correct the sinograms. Here, we expand the theoretical model to take these effects into account and demonstrate a significant reduction of (ring)-artefacts in the final reconstructions, while allowing for a significant reduction of scan time and dose. We further improve the model by including the capability to reconstruct combined absorption and phase contrast slices, which we experimentally demonstrate to deliver improved contrast to noise ratios compared to previously employed single shot approaches.
| Type: | Article |
|---|---|
| Title: | Improved iterative tomographic reconstruction for x-ray imaging with edge-illumination |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1088/1361-6560/ab439d |
| Publisher version: | https://doi.org/10.1088/1361-6560/ab439d |
| Language: | English |
| Additional information: | As the Version of Record of this article is going to be / has been published on a gold open access basis under a CC BY 3.0 licence, this Accepted Manuscript is available for reuse under a CC BY 3.0 licence immediately. |
| Keywords: | edge illumination, iterative tomographic reconstruction, x-ray phase contrast imaging |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10081619 |
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