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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 6 — Mar. 12, 2012
  • pp: 5817–5829

Propagation beam consideration for 3D THz computed tomography

B. Recur, J. P. Guillet, I. Manek-Hönninger, J. C. Delagnes, W. Benharbone, P. Desbarats, J. P. Domenger, L. Canioni, and P. Mounaix  »View Author Affiliations

Optics Express, Vol. 20, Issue 6, pp. 5817-5829 (2012)

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In this paper, a model of the beam propagation is developed according to the physical properties of THz waves used in THz computed tomography (CT) scan imaging. This model is first included in an acquisition simulator to observe and estimate the impact of the Gaussian beam intensity profile on the projection sets. Second, the model is introduced in several inversion methods as a convolution filter to perform efficient tomographic reconstructions of simulated and real acquired objects. Results obtained with three reconstruction methods (BFP, SART and OSEM) are compared to the techniques proposed in this paper. We will demonstrate an increase of the overall quality and accuracy of the 3D reconstructions.

© 2011 OSA

OCIS Codes
(100.6890) Image processing : Three-dimensional image processing
(120.5800) Instrumentation, measurement, and metrology : Scanners
(170.3010) Medical optics and biotechnology : Image reconstruction techniques
(110.6795) Imaging systems : Terahertz imaging
(110.6955) Imaging systems : Tomographic imaging

ToC Category:
Imaging Systems

Original Manuscript: October 18, 2011
Revised Manuscript: November 25, 2011
Manuscript Accepted: December 5, 2011
Published: February 27, 2012

B. Recur, J. P. Guillet, I. Manek-Hönninger, J. C. Delagnes, W. Benharbone, P. Desbarats, J. P. Domenger, L. Canioni, and P. Mounaix, "Propagation beam consideration for 3D THz computed tomography," Opt. Express 20, 5817-5829 (2012)

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