A medical image diagnosis apparatus emits radiation to a breast as a subject, detects radiation that has passed through the subject, and generates three-dimensional image data including a plurality of tomographic images of the subject. The medical image diagnosis apparatus includes an image generator, a setting unit, an image detector, and a display controller. The image generator projects the three-dimensional image data in a predetermined direction to generate a two-dimensional image. The setting unit sets a region of interest in the two-dimensional image. Based on the region of interest and a corresponding region that corresponds to the region of interest in each of the tomographic images, the image detector detects a tomographic image including the corresponding region that is similar in pixel value to the region of interest from the three-dimensional image data. The display controller displays the tomographic image detected by the image detector on a display unit.
