[OPTICAL REVIEW Vol. 10, No. 6 (2003) 600-606]
© 2003 The Optical Society of Japan

Monte Carlo Simulation of Near Infrared Reflectance Spectroscopy in the Wavelength Range from 1000 nm to 1900 nm

Kenji IINO1, Katsuhiko MARUO2, Hidenobu ARIMOTO3, Koji HYODO3, Tetsu NAKATANI3 and Yukio YAMADA1,3

1Department of Mechanical and Control Engineering, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo 182-8585, Japan
2Matsushita Electric Works, Ltd., 1048 Kadoma, Osaka 571-8686, Japan
3National Institute of Advanced Industrial Science and Technology, Namiki 1-2-1 Tsukuba, Ibaraki 305-8564, Japan

(Received March 3, 2003; Accepted August 5, 2003)

We have calculated the characteristics of reflected near infrared light, which is incident on the skin surface, scattered in the skin tissue and detected, in the wavelength range from 1000 nm to 1900 nm. We have used a Monte Carlo method to calculate the propagation path, the average photon visit depth, the average photon path length, etc. for the cases of short source-detector distances, to which the isotropic scattering approximation cannot be applied. An experiment to validate the simulation results was also conducted using a liquid phantom.

Key words: near infrared, average photon visit depth, Monte Carlo method, skin optics, glucose measurement, average photon path length