An apparatus for efficiently recognizing a part of a body shown in each of plural axial images for one series of axial images obtained by imaging an object to be inspected with a modality. The apparatus includes: apart determining unit for tentatively determining a part of a body shown in each of plural axial images; and a part correcting unit for correcting the part tentatively determined for at least one axial image by the part determining unit, based on information on the plural axial images.