Monte Carlo analysis of near-infrared light propagation in a neonatal head model

Shuhei Eda, Eiji Okada

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In brain function measurement using near-infrared light, it is very important to make a theoretical analysis of light propagation in the head tissue, since it is impossible to measure the effect of optical fiber arrangement on the region of measurement or its sensitivity. The Monte Carlo method is widely used in the analysis of near-infrared light propagation in biological tissue, since it allows light propagation analysis of heterogeneous tissue by a relatively simple algorithm. In this study, a model simulating the cross-sectional structure of the neonatal head is constructed by using square elements, and the light propagation is analyzed. First, the variance-reduction (VR) method and the delta-scattering (DS) method, which are typical algorithms of the Monte Carlo method, are applied to the model composed of square elements, and the results of the analysis and the computation time for light propagation are compared and discussed. It is shown that the DS method is useful for a model composed of small square elements, since the computation time depends little on the size of the elements. As a result of analysis of light propagation in the neonatal head model using the DS method, we see that light propagation is greatly affected by the heterogeneity of the head tissue.

Original languageEnglish
Pages (from-to)60-69
Number of pages10
JournalSystems and Computers in Japan
Volume35
Issue number9
DOIs
Publication statusPublished - 2004 Aug

Fingerprint

Light propagation
Infrared
Propagation
Infrared radiation
Tissue
Scattering
Monte Carlo method
Model
Monte Carlo methods
Biological Tissue
Variance Reduction
Reduction Method
Optical Fiber
Optical fibers
Arrangement
Brain
Theoretical Analysis

Keywords

  • Brain function measurement
  • Light propagation analysis
  • Monte Carlo method
  • Near-infrared spectroscopy

ASJC Scopus subject areas

  • Hardware and Architecture
  • Information Systems
  • Theoretical Computer Science
  • Computational Theory and Mathematics

Cite this

Monte Carlo analysis of near-infrared light propagation in a neonatal head model. / Eda, Shuhei; Okada, Eiji.

In: Systems and Computers in Japan, Vol. 35, No. 9, 08.2004, p. 60-69.

Research output: Contribution to journalArticle

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