[OPTICAL REVIEW Vol. 4, No. 5 (1997) 620-621]

Frequency-Domain Measurements of Diffusing Photon Propagation in Solid Phantoms

Makoto YAMAUCHI,1 Yukio YAMADA2 and Yasuo HASEGAWA3

1Optical Engineering Division, Department of Applied Physics and Information Science, 2Biomechanics Division, Department of Material Science and Bioengineering, 3Energy Conversion Division, Department of Energy Engineering, Mechanical Engineering Laboratory, Namiki, 1-2, Tsukuba, Ibaraki, 305 Japan

(Received May 13, 1997; Accepted June 24, 1997)

Photon propagation in a highly scattering medium such as living tissue is well described by the photon diffusion equation. In a homogeneous and isotropic case, the equation has analytically been solved for a medium with a simple geometrical shape. We report frequency-domain measurements using slab-shaped solid phantoms. Comparison of the results with computer simulations proves the validity of extrapolated boundary conditions.

Key words : highly scattering medium, photon diffusion equation, frequency-domain, solid phantom, extrapolated boundary condition