Optics: measuring and testing – For light transmission or absorption – By comparison
Patent
1997-08-12
2000-02-08
Kim, Robert
Optics: measuring and testing
For light transmission or absorption
By comparison
356446, G01N 2100
Patent
active
060233419
ABSTRACT:
A device for imaging a turbid medium, for example a breast of a female, includes a holder for receiving the medium, a light source, a photodetector and a processing unit for deriving the image from the intensities measured. The holder is adapted to receive besides the turbid medium also an adaptation medium for influencing a photon path distribution of the turbid medium. The use of different values of optical parameters of the adaptation medium introduces different photon path distributions in the turbid medium. By means of these different photon path distributions the resolution of the image can be improved by utilizing the light sources and/or photodetectors in the same positions. When a liquid is used as the adaptation medium the shape of the adaptation medium can be perfectly matched between the holder and the turbid medium.
REFERENCES:
patent: 5441054 (1995-08-01), Tsuchiya
patent: 5477051 (1995-12-01), Tsuchiya
patent: 5526118 (1996-06-01), Miyagawa et al.
patent: 5596987 (1997-01-01), Chance
"Monte Carlo Simulations of Photon Migration Path Distributions in Multiple Scattering Media", By S. Feng et al, SPIE, vol. 1888, 1993, pp. 78-89.
Kim Robert
Renfrew, Jr. Dwight H.
U.S. Philips Corporation
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