Hybrid Monte Carlo-Diffusion method for light propagation in tissue with low scattering layer

Toshiyuki Hayashi, Yoshihiko Kashio, Eiji Okada

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Near infrared spectroscopy is increasingly being used for monitoring cerebral oxygenation and haemodynamics. Since the light in the head is strongly scattered, it is necessary to modelling the light propagation in the head to obtain the volume of tissue sampled and partial optical path length in the brain. The serious problem to calculate the light propagation in the head is the heterogeneity of tissue especially the presence of low scattering CSF layer. Since the diffusion equation no longer holds in the low scattering layer, the light propagation in the head model with low scattering layer should be analysed by Monte Carlo method or light transport equation. In this study, we propose a new approach "Hybrid Monte Carlo-Diffusion Method" to calculate the light propagation in the adult head model with a low scattering CSF layer. The light propagation in a high scattering medium is calculated by the diffusion theory and that in a low scattering CSF layer is predicted by Monte Carlo method. The results of detected intensity and mean time of flight in a simplified adult head model by the Hybrid Monte Carlo-Diffusion method agree well with those predicted by Monte Carlo method.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsS. Andersson-Engels, M.F. Kaschke
Pages169-175
Number of pages7
Volume4431
DOIs
Publication statusPublished - 2001
EventPhoton Migration, Optical Coherence Tomography, and Microscopy - Munich, Germany
Duration: 2001 Jun 182001 Jun 21

Other

OtherPhoton Migration, Optical Coherence Tomography, and Microscopy
CountryGermany
CityMunich
Period01/6/1801/6/21

Fingerprint

Light propagation
Scattering
Tissue
propagation
scattering
Monte Carlo methods
Monte Carlo method
Near infrared spectroscopy
Oxygenation
Hemodynamics
hemodynamics
diffusion theory
oxygenation
optical paths
Brain
brain
infrared spectroscopy
Monitoring

Keywords

  • CSF
  • Diffusion theory
  • FEM
  • Low-scattering medium
  • Monte Carlo
  • Near-infrared spectroscopy

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Hayashi, T., Kashio, Y., & Okada, E. (2001). Hybrid Monte Carlo-Diffusion method for light propagation in tissue with low scattering layer. In S. Andersson-Engels, & M. F. Kaschke (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 4431, pp. 169-175) https://doi.org/10.1117/12.447417

Hybrid Monte Carlo-Diffusion method for light propagation in tissue with low scattering layer. / Hayashi, Toshiyuki; Kashio, Yoshihiko; Okada, Eiji.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / S. Andersson-Engels; M.F. Kaschke. Vol. 4431 2001. p. 169-175.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Hayashi, T, Kashio, Y & Okada, E 2001, Hybrid Monte Carlo-Diffusion method for light propagation in tissue with low scattering layer. in S Andersson-Engels & MF Kaschke (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 4431, pp. 169-175, Photon Migration, Optical Coherence Tomography, and Microscopy, Munich, Germany, 01/6/18. https://doi.org/10.1117/12.447417
Hayashi T, Kashio Y, Okada E. Hybrid Monte Carlo-Diffusion method for light propagation in tissue with low scattering layer. In Andersson-Engels S, Kaschke MF, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 4431. 2001. p. 169-175 https://doi.org/10.1117/12.447417
Hayashi, Toshiyuki ; Kashio, Yoshihiko ; Okada, Eiji. / Hybrid Monte Carlo-Diffusion method for light propagation in tissue with low scattering layer. Proceedings of SPIE - The International Society for Optical Engineering. editor / S. Andersson-Engels ; M.F. Kaschke. Vol. 4431 2001. pp. 169-175
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