PROBLEM TO BE SOLVED: To provide a medical image diagnostic device and a medical image processor capable of easily grasping position information of regions of interest in a breast X-ray image.SOLUTION: According to this embodiment, a medical image diagnostic device includes a position information specification part for specifying three-dimensional position information of regions of interest on the basis of the mutually corresponding regions of interest respectively included in a breast X-ray image obtained by photographing a breast of a subject in two or more directions, and a schema generation part for generating a schema showing the specified three-dimensional position information of the regions of interest in a breast model being a diagram that schematically represents the breast.
