To solve the problem that locating a region to be diagnosed in a breast is difficult only by a three-dimensional image showing the specific region to be diagnosed in the breast.

A report image 100 is composed of a graphic image as a background image and one or more three-dimensional images. The graphic image has virtual images 104 and 106. The virtual images schematically represent a breast. To ensure that the positional relationship between an actual papilla and a diagnosed region is reproduced as it is on the virtual images 104 and 106. The composing positions of three-dimensional images 114, 116 and 118 are computed. It is also possible to measure distances on the report image 100.