1. A medical imaging station including acquisition means for obtaining images exhibiting levels of gray, display means for displaying the images, segmentation means for segmenting at least one imaged object, said segmentation means determining a so-called segmentation zone delimiting the imaged object on the image, and path extraction means for extracting at least one path within the segmentation, characterized in that the extraction means include: means of positioning an initial point on the segmentation, means of propagating an edge within the segmentation from the initial point, means of testing the connectedness of the edge, means of labeling the portions of the edge, called ramifications, when an unconnected edge is detected, means of identifying final points of the propagation on the ramifications, path tracing means for tracing a path from the final points and the initial point.