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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 36, Iss. 24 — Dec. 15, 2011
  • pp: 4809–4811

Extending reference scan drift correction to high-magnification high-cone-angle tomography

Glenn R. Myers, Andrew M. Kingston, Trond K. Varslot, and Adrian P. Sheppard  »View Author Affiliations


Optics Letters, Vol. 36, Issue 24, pp. 4809-4811 (2011)
http://dx.doi.org/10.1364/OL.36.004809


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Abstract

The reference scan method is a simple yet powerful method for measuring spatial drift of the x-ray spot during a low-cone-angle μ-CT experiment. As long as the drift is smooth, and occurring on a time scale that is long compared to the acquisition time of each projection, this method provides a way to compensate for the drift by applying 2D in-plane translations to the radiographs. Here we show that this compensation may be extended to the regime of high-magnification, high-cone-angle CT experiments where source drift perpendicular to the detector plane can cause significant magnification changes throughout the acquisition.

© 2011 Optical Society of America

OCIS Codes
(100.6950) Image processing : Tomographic image processing
(340.7440) X-ray optics : X-ray imaging
(110.6955) Imaging systems : Tomographic imaging

ToC Category:
Image Processing

History
Original Manuscript: October 13, 2011
Manuscript Accepted: October 31, 2011
Published: December 15, 2011

Virtual Issues
Vol. 7, Iss. 2 Virtual Journal for Biomedical Optics

Citation
Glenn R. Myers, Andrew M. Kingston, Trond K. Varslot, and Adrian P. Sheppard, "Extending reference scan drift correction to high-magnification high-cone-angle tomography," Opt. Lett. 36, 4809-4811 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-24-4809


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References

  1. F. Natterer, The Mathematics of Computerized Tomography (Society for Industrial and Applied Mathematics, Philadelphia, 2001).
  2. A. Kingston, A. Sakellariou, T. Varslot, G. Myers, and A. Sheppard, Med. Phys. 38, 4934 (2011). [CrossRef]
  3. A. Sasov, X. Liu, and P. L. Salmon, Proc. SPIE 7078, 70781C-1 (2008).
  4. T. Varslot, A. Kingston, G. Myers, and A. Sheppard, Med. Phys. 38, 5459 (2011). [CrossRef]

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