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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 6 — Feb. 20, 2008
  • pp: 799–806

Effects of the time dependence of a bioluminescent source on the tomographic reconstruction

Mehmet Burcin Unlu and Gultekin Gulsen  »View Author Affiliations


Applied Optics, Vol. 47, Issue 6, pp. 799-806 (2008)
http://dx.doi.org/10.1364/AO.47.000799


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Abstract

There are two goals in this simulation study: (1) to show that the time variation of the bioluminescence source can cause artifacts in the tomographic images such that quantification and localization becomes impossible; and (2) to show that the a priori knowledge of the light kinetics can be used to eliminate these artifacts. These goals are motivated by the fact that the half-life of luciferase has been reported as 30 min to 2 h in vivo. We perform two-dimensional simulations. We consider a 40   mm diameter circular region with an inclusion of 6   mm diameter located 10   mm away from the center. The measurement data is simulated using a finite-element-based forward solver. We model the noncontact measurements such that four-wavelength data is collected from four 90° apart views. The results show that the ratio of the total imaging time to the half-life of the exponentially decaying bioluminescent source is the deciding factor in the reconstruction of the source. It is also demonstrated that a priori knowledge of the source kinetics is required to perform tomographic bioluminescence imaging of short half-life bioluminescent sources and the use of spatial a priori information alone is not adequate.

© 2008 Optical Society of America

OCIS Codes
(110.3080) Imaging systems : Infrared imaging
(170.3010) Medical optics and biotechnology : Image reconstruction techniques

ToC Category:
Medical Optics and Biotechnology

History
Original Manuscript: August 9, 2007
Manuscript Accepted: November 10, 2007
Published: February 19, 2008

Virtual Issues
Vol. 3, Iss. 3 Virtual Journal for Biomedical Optics

Citation
Mehmet Burcin Unlu and Gultekin Gulsen, "Effects of the time dependence of a bioluminescent source on the tomographic reconstruction," Appl. Opt. 47, 799-806 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-6-799

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