1. A method for processing medical image data which image a structure layer by layer, the image data for at least some layers respectively comprising a plurality of layer images, the method comprising: automatically segmenting the structure in the layer images; automatically determining a position of a point in one of the layer images, the point being representative of the structure segmented in the layer image, respectively for a plurality of the layer images in which the structure has been segmented; and automatically compiling at least one layer image set by allocating a layer image to the layer image set, respectively, for a plurality of the layer images, the allocating being carried out on a basis of the determined positions of the representative points in the respective layer images.