Process and system for automatically recognising...

G - Physics – 06 – T

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G06T 7/00 (2006.01)

Patent

CA 2647420

A process for the automatic recognition of abnormalities in anatomical structures is described together with a processing system and a computer program for implementing the aforesaid process, comprising the operations of : acquiring (10) a plurality of two-dimensional images of at least one portion of a patient's body capable of forming a three-dimensional representation of at least one anatomical structure under observation, segmenting (20) a region of interest in the said three-dimensional representation which potentially contains anomalies, selecting (30, 40) volume image elements (voxels) from the segmented region which are likely to form a part of abnormalities in the anatomical structure represented, on the basis of predetermined morphological parameters, agglomerating (60) the said voxels into analysis units on the basis of the distribution of the spatial density of the voxels selected, and classifying (70) the said analysis units as elements suspected of being parts of abnormalities or as elements which are not part of abnormalities.

La présente invention concerne un procédé pour reconnaître automatiquement des anomalies dans des structures anatomiques, ainsi qu'un système de traitement et un programme informatique pour mettre en oeuvre le procédé sus-mentionné, comprenant les opérations suivantes : acquisition (10) d'une pluralité d'images bidimensionnelles d'au moins une partie du corps d'un patient permettant la formation d'une représentation tridimensionnelle d'au moins une structure anatomique en cours d'observation; segmentation (20) d'une zone d'intérêt dans ladite représentation tridimensionnelle, susceptible de contenir des anomalies; sélection (30, 40) d'éléments de volume d'image (voxels) à partir de la zone segmentée, susceptibles de constituer une partie d'anomalies dans la structure anatomique représentée, sur la base de paramètres morphologiques prédéterminés; agglomération (60) desdits voxels en unités d'analyse sur la base de la répartition de densité spatiale des voxels sélectionnés; et classification (70) desdites unités d'analyse en tant qu'éléments suspectés d'être de constituer des parties d'anomalies ou en tant qu'éléments ne faisant pas partie d'anomalies.

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