PROBLEM TO BE SOLVED: To provide a display device that is used in an X-ray tomographic device, enabling wrong operations for image reading or chores of an image display to be held down.;SOLUTION: On the basis of three-dimensional volume data about right and left breasts, tomographic images R1 and L1 about the right and left breasts in a head tail direction CC are simultaneously output and displayed on the same screen, and the tomographic images R1 and L1 are adapted so as to be output and displayed in a symmetrical way with chest wall sides of the mutual breasts arranged at a centre. In this way, the tomographic images R1 and L1 are adapted so as to be output and displayed in the symmetrical way with the chest wall sides of the mutual breasts arranged at the centre thereon, and thus, the tomographic images can be easily displayed that make comparison with diagnostic images in other modalities easy. Accordingly, chores are eliminated, wrong operations decrease, even operation time is shortened, and a difference among the operation time depending on operators can be minimized. As a result, the wrong operation for image reading or chores of an image display can be held down.;SELECTED DRAWING: Figure 4;COPYRIGHT: (C)2019,JPO&INPIT
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