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Optics Letters

Optics Letters


  • 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)

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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

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

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)

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  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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