System and method for determining volume-related parameters...

Details System and method for determining volume-related parameters... System and method for determining volume-related parameters...

A - Human Necessities

61

B

A61B 3/12 (2006.01) A61B 3/10 (2006.01) G01B 11/06 (2006.01) G01N 21/25 (2006.01)

Patent

CA 2743458

A system and method for determining volume-related parameters of a biological tissue, such as ocular tissue, include a light source for projecting light towards the biological tissue, a receiver for receiving light reflected from the biological tissue at two spectral wavelengths, and an image acquisition system in communication with the receiver for forming an image from the reflected light at each wavelength. A processor applies a mathematical model to the image which compares the absorption of light by the biological tissue at a selected image point at each of the two spectral wavelengths to determine the volume-related parameters, such as the relative thickness and material properties, of the biological tissue at that location.

L'invention concerne un système et un procédé de détermination de paramètres volumétriques d'un tissu biologique, tel qu'un tissu oculaire, qui comprennent une source lumineuse afin de projeter une lumière vers le tissu biologique, un récepteur destiné à recevoir la lumière réfléchie à partir du tissu biologique à deux longueurs d'onde spectrales, et un système d'acquisition d'image en communication avec le récepteur en vue de former une image à partir de la lumière réfléchie à chaque longueur d'onde. Un processeur applique un modèle mathématique à l'image afin de comparer l'absorption lumineuse par le tissu biologique en un point d'image sélectionné, pour chacune des deux longueurs d'onde spectrales, afin de déterminer les paramètres volumétriques tels que l'épaisseur relative et les propriétés matérielles du tissu biologique à cet emplacement.

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