To allow accurate evaluation of a function of a heart in each position by clearly representing morphology of a blood vessel of the heart. Using first voxel data of a three-dimensional medical image obtained by photographing a subject, a functional image (200) representing a function of a heart in each position is generated, and using a portion of second voxel data of a three-dimensional medical image obtained by photographing the subject corresponding to an area which includes a blood vessel along an outer myocardial wall of the heart, a morphological image (210) depicting morphology of the blood vessel is generated. Then, the functional image (200) and the morphological image (210) are displayed in a superimposing manner such that each position of the heart in the functional image corresponds to each position of the heart in the morphological image.
