TY - GEN
T1 - Analysis of light propagation in adult head model by direct hybrid Monte Carlo-diffusion method
AU - Ogoshi, Yosuke
AU - Hayashi, Toshiyuki
AU - Fukui, Yuichi
AU - Okada, Eiji
N1 - Publisher Copyright:
© 2003 IEEE.
PY - 2003
Y1 - 2003
N2 - The development of a model to calculate light propagation in the head is essential for brain function measurement by near- infrared spectroscopy and imaging. The light propagation in the head is affected by lon- scattering cerebrospinal fluid layer surrounding the brain although the diffusion equation is no longer valid in non- or low-scattering regions. In this study, the light propagation in a circle model and realistic head model is calculated by the direct hybrid Monte Carlo-diffusion method (DHMDM). The light propagation in the highly scattering medium is calculated by the diffusion theory and that in the low-scattering CSF is predicted by Monte Carlo method. The results by the DHMDM are validated by those by Monte Carlo simulation. The results for the circle and realistic head models suggest that non-smoothness of the CSF boundary affects the light propagation in the brain.
AB - The development of a model to calculate light propagation in the head is essential for brain function measurement by near- infrared spectroscopy and imaging. The light propagation in the head is affected by lon- scattering cerebrospinal fluid layer surrounding the brain although the diffusion equation is no longer valid in non- or low-scattering regions. In this study, the light propagation in a circle model and realistic head model is calculated by the direct hybrid Monte Carlo-diffusion method (DHMDM). The light propagation in the highly scattering medium is calculated by the diffusion theory and that in the low-scattering CSF is predicted by Monte Carlo method. The results by the DHMDM are validated by those by Monte Carlo simulation. The results for the circle and realistic head models suggest that non-smoothness of the CSF boundary affects the light propagation in the brain.
KW - Finite element method
KW - Monte Carlo simulation
KW - Near infrared spectroscopy
KW - Photon migration
UR - https://www.scopus.com/pages/publications/84945940502
UR - https://www.scopus.com/pages/publications/84945940502#tab=citedBy
U2 - 10.1109/APBME.2003.1302711
DO - 10.1109/APBME.2003.1302711
M3 - Conference contribution
AN - SCOPUS:84945940502
T3 - APBME 2003 - IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003
SP - 316
EP - 317
BT - APBME 2003 - IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - IEEE EMBS Asian-Pacific Conference on Biomedical Engineering 2003, APBME 2003
Y2 - 20 October 2003 through 22 October 2003
ER -