Method for automatically identifying the contours of a predefined bone, derived methods and corresponding computer program products

摘要

A method is provided for automatic identification of the contours of at least one portion of a predefined bone on the basis of a plurality of images representing parallel sections through a measurement volume including the portion of bone and which are obtained by a medical imaging technique. The method includes: a step of obtaining at least one shape of closed contour in at least one of the filtered images; a step of associating with each of the shapes a tag selected within a predefined bone-related nomenclature; a step of classifying the shapes so as to form at least one group of shapes delimiting a common volume isolated in space; a step of selecting the shapes of the group of target shapes.

主权项

1. A method for automatically identifying the contours of at least one portion of a predefined bone from a plurality of images representing parallel sections of a measurement volume comprising said bone portion, said images being obtained by a medical imaging technique, wherein the method comprises:
a step of filtering the images with a processor, comprising a step of comparing, for each of said images, the intensity of at least one fundamental point of said image with a reference intensity, in such a way that a filtered image is obtained comprising said fundamental points of the image of which a density corresponds to that of an osseous tissue; a step of obtaining at least one closed contour shape in at least one of the filtered images; a step of associating each of the shapes of a label selected with a predefined osseous nomenclature; a step of identifying said contours of said portion of bone comprising:
a step of classifying said shapes so as to form at least one group of shapes defining a common spatially isolated volume;a step of determining, from said shape groups, a target shape group for which said label corresponding to said bone is associated, predominantly, with said shapes of this group;a step of selecting shapes from said target shape group.