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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 12 — Jun. 6, 2011
  • pp: 11578–11583

Numerical model for tomographic image formation in transmission x-ray microscopy

Michael Bertilson, Olov von Hofsten, Hans M. Hertz, and Ulrich Vogt  »View Author Affiliations


Optics Express, Vol. 19, Issue 12, pp. 11578-11583 (2011)
http://dx.doi.org/10.1364/OE.19.011578


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Abstract

We present a numerical image-formation model for investigating the influence of partial coherence, sample thickness and depth-of-focus on the accuracy of tomographic reconstructions in transmission x-ray microscopes. The model combines wave propagation through the object by finite difference techniques with Fourier methods. We include a ray-tracing model to analyse the origin of detrimental stray light in zone plate-based x-ray microscopes. These models allow optimization of x-ray microscopy systems for quantitative tomographic imaging of thick objects. Results show that both the depth-of-focus and the reconstructed local absorption coefficient are highly dependent on the degree of coherence of the optical system.

© 2011 OSA

OCIS Codes
(110.4980) Imaging systems : Partial coherence in imaging
(340.0340) X-ray optics : X-ray optics
(340.7460) X-ray optics : X-ray microscopy
(110.6955) Imaging systems : Tomographic imaging

ToC Category:
X-ray Optics

History
Original Manuscript: April 12, 2011
Revised Manuscript: May 24, 2011
Manuscript Accepted: May 26, 2011
Published: May 31, 2011

Virtual Issues
Vol. 6, Iss. 7 Virtual Journal for Biomedical Optics

Citation
Michael Bertilson, Olov von Hofsten, Hans M. Hertz, and Ulrich Vogt, "Numerical model for tomographic image formation in transmission x-ray microscopy," Opt. Express 19, 11578-11583 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-12-11578


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