[Aim] Both of morphology information and function information about a subject are efficiently recognized. [Means for Solving Problems] Morphological image (SI) and functional image (FI) are obtained. After then, base line (CL) is set in the morphological image (SI), and the functional image (FI) is divided based on the base line (CL) . The morphological image (SI) and divided images (FI1, FI2) are placed one on the other, and displayed on a display device (2). At this time, the functional image (FI) is divided with respect to the core line (CL), and the divided images are displayed. Alternatively, a cross section position displayed in the morphological image (SI) is rotated while the display of the functional image (FI) is not changed.
