Patent ID: 6064073
Filing Date: 2000-05-16
Classification: A61B,G01N

Abstract:
A method of localizing an object in a turbid medium, which method includes the following steps:irradiating the turbid medium and determining an intensity of a part of the light transported through the turbid medium along a plurality of light paths,determining an estimated intensity of the light of a selected light path by way of a first combination of predetermined attenuation coefficients of voxels of the turbid medium and a predetermined weighting function which is related to a position of a voxel relative to the selected light path,determining a difference between the estimated intensity and the determined intensity for the selected light path, anddetermining a next value of the attenuation coefficients of the voxels by way of a second combination of the differences determined for the plurality of light paths from source points at which the light enters the turbid medium to detector points at which the light leaves the turbid medium, characterized in that the weighting function is determined in such a manner that it contains a function which can be factored along a first and a second orthogonal vector which extend transversely to the selected light path.