The embodiment of the invention provides an
ossicular chain size measurement method and device, a storage medium and a program product, and the method comprises the steps: obtaining a target
mask image in response to a measurement request, and extracting
mask images corresponding to three small bones from the target
mask image; the three small bones comprise a hammer bone, an incus and a stapes bone; voxels of corresponding small bones are extracted from the mask image, and
point cloud data of the small bones are constructed based on
voxel coordinates; for any small bone, determining at least one key axis corresponding to the small bone based on the small bone
point cloud data, and determining a plurality of key points corresponding to the small bone based on the at least one key axis; and based on the plurality of key points corresponding to the three small bones respectively, determining at least one piece of size data corresponding to the three small bones respectively and a position relationship corresponding to any two small bones. According to the technical scheme provided by the embodiment of the invention, the accuracy and efficiency of the
size measurement of the
ossicular chain are improved.