NDLI: Topographic Distribution of Photon Measurement Density Functions on the Brain Surface by Hybrid Radiosity-Diffusion Method

Content Provider	Springer Nature Link
Author	Kashio, Yoshihiko Schweiger, Martin Dehghanim, Hamid Arridge, Simon R. Firbank, Michael Okada, Eiji
Copyright Year	2000
Abstract	An accurate modelling of light propagation in the head is required to develop an algorithm to reconstruct the image of brain activity. Most previous studies have calculated the light propagation in two dimensional models because of their advantage in computation time and memory requirement over three dimensional models. However, in topographic imaging, the sensitivity distribution in the cross sections parallel to the brain surface which cannot be obtained from a two dimensional model is most important to reconstruct the image. In this study, the light propagation in three dimensional adult head models is calculated by finite element method and hybrid radiosity-diffusion method. The light propagation in the adult head is strongly affected by the non-scattering cerebrospinal fluid (CSF) layer surrounding the brain. The sensitive area is shifted toward the deeper region, and is spread around the CSF layer. The intensely sensitive region on the brain surface is broadly distributed between the source and detector. However, the sensitive region does not penetrate into the deeper part of the brain.
Starting Page	426
Ending Page	431
Page Count	6
File Format	PDF
ISSN	13406000
Journal	Optical Review
Volume Number	7
Issue Number	5
e-ISSN	13499432
Language	English
Publisher	Springer-Verlag
Publisher Date	2000-01-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	near infrared spectroscopy diffusion equation finite element method hybrid radiosity diffusion model topographic imaging photon measurement density function Electromagnetism, Optics and Lasers
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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