Method and device for imaging the interior of a turbid medium

Details Method and device for imaging the interior of a turbid medium Method and device for imaging the interior of a turbid medium

1996-09-11

1998-02-17

Porta, David P.

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

128633, G06T 100

Patent

active

057193983

ABSTRACT:
A method and device of imaging an interior of a turbid medium is disclosed for reconstruction of biomedical images consecutive irradiation of the turbid medium with light from a light source from a plurality of positions and detection of the light propagated along a plurality of paths through the turbid medium. The method starts with a simple back-projection algorithm to get a first image. Then in next steps this image is corrected by deconvolution with a spatially varying convolution function. This convolution function is based on the scattering and coefficients of the turbid medium and the propagation of the light in the turbid medium. A second correction approach is obtained by means of a coordinate transformation. Advantages of the method according to the invention are that the method is rather easy to implement, the method needs only a few iteration steps to obtain corrected images and the method does not suffer from instability problems.

REFERENCES:
"Monte Carlo Simulations Of Photon Migration Path Distributons In Multiple Scattering Media", Shechao Feng And Fanan Zeng, Spie vol. 1888, pp. 78-89 (Sep. 1993).
"Fundamentals Of Image Processing", A.K. Jain, Prentice Hall, 1989, pp. 439-441.
"Fundamentals Of Image Processing", A.K. Jain, Prentice Hall, 1989, pp. 464-465.

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