Method and apparatus for reflected imaging analysis

G - Physics – 01 – N

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G01N 21/21 (2006.01) A61B 5/00 (2006.01) A61B 5/026 (2006.01)

Patent

CA 2235772

Reflected imaging is used to perform non-invasive, in vivo analysis of a subject's vascular system. A raw reflected image (110) is normalized with respect to the background to form a corrected reflected image (120). An analysis image (130) is segmented from the corrected reflected image to include a scene of interest for analysis. The method and apparatus can be used to determine such characteristics as the hemoglobin concentration per unit volume of blood, the number of white blood cells per unit volume of blood, a mean cell volume, the number of platelets per unit volume of blood, and the hematocrit. Cross-polarizers (1510 and 1520) can be used to improve visualization of the reflected image.

Cette invention concerne un procédé et un appareil d'analyse par imagerie réfléchie. On utilise l'imagerie réfléchie pour effectuer une analyse in vivo, non sanglante du système vasculaire d'un sujet. On normalise une image réfléchie brute (110) par rapport à l'arrière-plan de façon à constituer une image réfléchie corrigée (120). On segmente l'image réfléchie corrigée pour obtenir une image d'analyse (130) qui contient une scène intéressante à analyser. On peut utiliser ledit procédé et ledit appareil pour l'évaluation de caractéristiques telles que la concentration d'hémoglobine par unité de volume sanguin, le nombre de globules blancs par unité de volume sanguin, un volume moyen de globules, le nombre de plaquettes par unité de volume sanguin et l'hématocrite. Il est possible d'utiliser des polariseurs croisés (1510 et 1520) pour améliorer l'affichage de l'image réfléchie.

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