Effect of scattering of arachnoid trabeculae on light propagation in the adult brain

Eiji Okada, David T. Delpy

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

12 Citations (Scopus)

Abstract

The heterogeneity of tissue can cause considerable errors in NIRS measurements, especially the presence of the non-scattering and clear CSF layer around the brain which strongly affects light propagation in the head. In this study the effect of scattering caused by arachnoid trabeculae in the otherwise clear CSF layer is investigated by Monte Carlo simulation. Results show that the presence of arachnoid trabeculae affects the total optical path length, a parameter which can be directly obtained by time resolved measurement. However, the partial optical path length in the brain, which relates the sensitivity of the NIRS signal to absorption changes in the brain is strongly affected by the CSF layer even if the light is scattered by the arachnoid trabeculae.

Original languageEnglish
Title of host publicationBiomedical Optical Spectroscopy and Diagnostics, BOSD 2000
PublisherOptica Publishing Group (formerly OSA)
Pages256-258
Number of pages3
ISBN (Electronic)9781557528209
Publication statusPublished - 2000
EventBiomedical Optical Spectroscopy and Diagnostics, BOSD 2000 - Miami Beach, United States
Duration: 2000 Apr 2 → …

Publication series

NameOptics InfoBase Conference Papers

Conference

ConferenceBiomedical Optical Spectroscopy and Diagnostics, BOSD 2000
Country/TerritoryUnited States
CityMiami Beach
Period00/4/2 → …

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials

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