Multi parametric classification of cardiovascular sounds

A - Human Necessities – 61 – B

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A61B 7/04 (2006.01) G06K 9/00 (2006.01)

Patent

CA 2654252

The present invention relates to a method for classifying a cardiovascular sound recorded from a living subject. The method comprises the steps of: identifying diastolic and/or systolic segments of said cardiovascular sound; dividing at least one of said identified diastolic and/or systolic segments into a number of sub-segments comprising at least a first sub-segment and at least a second sub-segment; extracting from said first sub-segment at least a first signal parameter characterizing a first property of said cardiovascular sound, extracting from said second sub-segment at least a second signal parameter characterizing a second property of said cardiovascular sound; classifying said cardiovascular sound using said at least first signal parameter and said at least second signal parameter in a multivariate classification method. Furthermore, the invention relates to a system, stethoscope and server for classifying a cardiovascular sound recorded from a living subject, where the above-described method has been implemented.

La présente invention concerne un procédé de classification d'un son cardiovasculaire enregistré sur un sujet vivant. Le procédé comprend les étapes consistant à : identifier les segments diastoliques et/ou systoliques dudit son cardiovasculaire ; diviser au moins un desdits segments diastoliques et/ou systoliques identifiés en un certain nombre de sous-segments comprenant au moins un premier sous-segment et au moins un second sous-segment ; extraire dudit premier sous-segment au moins un premier paramètre de signal caractérisant une première propriété dudit son cardiovasculaire, extraire dudit second sous-segment au moins un second paramètre de signal caractérisant une seconde propriété dudit son cardiovasculaire ; classer ledit son cardiovasculaire en utilisant ledit au moins premier paramètre de signal et ledit au moins second paramètre de signal dans un procédé de classification à variables multiples. En outre, l'invention concerne un système, un stéthoscope et un serveur pour la classification d'un son cardiovasculaire enregistré sur un sujet vivant, où le procédé décrit ci-dessus a été mis en AEuvre.

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