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Optics Letters

Optics Letters


  • Vol. 30, Iss. 4 — Feb. 15, 2005
  • pp: 409–411

Complete-angle projection diffuse optical tomography by use of early photons

Gordon M. Turner, Giannis Zacharakis, Antoine Soubret, Jorge Ripoll, and Vasilis Ntziachristos  »View Author Affiliations

Optics Letters, Vol. 30, Issue 4, pp. 409-411 (2005)

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We present the first, to our knowledge, experimental images of complex-shaped phantoms embedded in diffuse media by use of optical tomography. Imaging is based on a complete-angle projection tomographic technique that utilizes transmitted early photons. Results are contrasted with measurements obtained at later gates as well as pseudocontinuous-wave data. The scanning system developed employs noncontact illumination and detection technologies that allow for high spatial sampling of transmitted photons. Combining this system with complete-angle illumination is found to be an important strategy toward improved imaging performance, resulting in a better-posed inversion problem. The appropriateness of reconstruction algorithms similar to those employed in x-ray computed tomography are showcased, and suggestions for model improvements are provided.

© 2005 Optical Society of America

OCIS Codes
(110.6960) Imaging systems : Tomography
(170.6920) Medical optics and biotechnology : Time-resolved imaging

Gordon M. Turner, Giannis Zacharakis, Antoine Soubret, Jorge Ripoll, and Vasilis Ntziachristos, "Complete-angle projection diffuse optical tomography by use of early photons," Opt. Lett. 30, 409-411 (2005)

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