OSA's Digital Library

Optics InfoBase > Conference Papers > ECBO > 2007 > TO > Page 6632_56 © 2007 OSA

Conference Paper
European Conference on Biomedical Optics
Munich Germany
June 17, 2007
ISBN: 9780819467768
TISSUE OPTICS (TO)

Time-resolved photon migration through an adult head model: comparison between Finite Element and Monte Carlo calculations

C. Mansouri and J.P. L'Huillier

http://dx.doi.org/10.1364/ECBO.2007.6632_56


View Full Text Article

Acrobat PDF (780 KB) Note that full-text PDFs from conferences typically contain 1-3 pages of content, some or all of which might be an abstract, summary, or miscellaneous items.





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations
  • Export Citation/Save Click for help

Abstract

In this work, a Finite Element calculations based on diffusion approximation are compared with Monte Carlo transport data code in time-resolved reflectance simulations of light propagation in a three-layered head model, which can be seen as a very simplistic approximation of the adult head. We also address the effects caused by the cerebrospinal fluid (CSF), filling the space between the skull and the brain, on the accuracy of the diffusion approximation for different values of CSF reduced scattering coefficients µs′ varying between 0.1 and 1 mm-1. Significant differences between transport and diffusion calculations show that diffusion approximation fails to describe accurately light propagation in voidlike region such as the cerebrospinal fluid (CSF), in which absorption and scattering are very small compared to the surrounding media, whereas the Monte Carlo predictions are not greatly affected. However, It is shown that the diffusion equation should provide reasonable solutions with a CSF reduced scattering coefficient µs′ = 0.3 mm-1. The results indicate that a multi-layered model including CSF is more appropriate for the determination of the optical properties of the human head and to obtain accurate solutions of the forward problem with diffusion approximation.

© 2007 SPIE

Citation
C. Mansouri and J. P. L'Huillier, "Time-resolved photon migration through an adult head model: comparison between Finite Element and Monte Carlo calculations," in Therapeutic Laser Applications and Laser-Tissue Interactions III, A. Vogel, ed., Vol. 6632 of Proceedings of SPIE-OSA Biomedical Optics (Optical Society of America, 2007), paper 6632_56.
http://www.opticsinfobase.org/abstract.cfm?URI=ECBO-2007-6632_56


Sort:  Journal  |  Reset

References

References are not available for this paper.

OSA is a member of CrossRef.

CrossCheck Deposited