A - Human Necessities – 61 – B
Patent
A - Human Necessities
61
B
A61B 6/00 (2006.01) G06T 5/00 (2006.01) G06F 19/00 (2006.01)
Patent
CA 2188394
A method and system for automated detection of lesions such as masses and/or parenchymal distortions in medical images such as mammograms. Dense regions and subcutaneous fat regions (102) within a mammogram (100) are segmented (101). A background correction may be performed within the dense regions. Hough spectrum within ROIs (104) placed in the breast region of a mammogram (100) are calculated and thresholded (106) using the intensity value in order to increase sensitivity and reduce the number of false-positive detections. Lesions are detected based on the thresholded Hough spectra. The thresholded Hough spectra are also used to differentiate between benign and malignant masses.
Procédé et système de détection automatisée de lésions telles que des masses et/ou des distorsions parenchymateuses dans des images médicales telles que clichés mammaires. On segmente (101) des régions denses et des régions de tissu adipeux sous-cutané (102) sur un cliché mammaire (100). Il est possible d'effectuer une correction de fond dans les régions denses. On calcule et l'on seuille (106) un spectre de Hough dans des régions d'intérêt (104) placées dans la région des seins d'un cliché mammaire (100), à l'aide de la valeur d'intensité ?, afin d'augmenter la sensibilité et de réduire le nombre de détections de faux positifs. On détecte des lésions sur la base des spectres de Hough seuillés. Lesdits spectres seuillés sont également utilisés pour distinguer les masses bénignes des masses malignes.
Giger Maryellen L.
Lu Ping
Zhang Ming
Arch Development Corp.
Arch Development Corporation
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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