Bronnikov-aided correction for x-ray computed tomography
JOSA A, Vol. 26, Issue 4, pp. 890-894 (2009)
http://dx.doi.org/10.1364/JOSAA.26.000890
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Abstract
When a very-low-absorbing sample is scanned at an x-ray computed tomography setup with a microfocus x-ray tube and a high-resolution detector, the obtained projection images contain not only absorption contrast but also phase contrast. While images without a phase signal can be reconstructed very well, such mixed phase and absorption images give rise to severe artifacts in the reconstructed slices. A method is described that applies a correction to these mixed projections to remove the phase signal. These corrected images can then be processed using a standard filtered backprojection algorithm to obtain reconstructions with only few or no phase artifacts. This new method, which we call the Bronnikov-aided correction (BAC), can be used in a broad variety of applications and without much additional effort. It is tested on a biological and a pharmaceutical sample, and results are evaluated and discussed by comparing them with those of conventional reconstruction methods.
© 2009 Optical Society of America
OCIS Codes
(100.5070) Image processing : Phase retrieval
(110.7440) Imaging systems : X-ray imaging
(110.6955) Imaging systems : Tomographic imaging
(110.3010) Imaging systems : Image reconstruction techniques
ToC Category:
Imaging Systems
History
Original Manuscript: September 30, 2008
Revised Manuscript: February 4, 2009
Manuscript Accepted: February 9, 2009
Published: March 19, 2009
Virtual Issues
Vol. 4, Iss. 6 Virtual Journal for Biomedical Optics
Citation
Yoni De Witte, Matthieu Boone, Jelle Vlassenbroeck, Manuel Dierick, and Luc Van Hoorebeke, "Bronnikov-aided correction for x-ray computed tomography," J. Opt. Soc. Am. A 26, 890-894 (2009)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-26-4-890
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