| 摘要 |
[Aim] When two images have been obtained by imaging a same subject at different points in time, and comparative observation is performed on the two images by using tomographic images, the tomographic images at accurately corresponding positions are extracted and displayed for comparison. [Solution Means] First tomographic image information for identifying a first tomographic image included in a first image and first region-of-interest information for identifying a first region of interest on the first tomographic image are obtained. An image deformation amount of one of the first image and the second image for deforming the one of the first image and the second image to match the first image and the second image with each other is calculated. A slice image in the second image corresponding to the first tomographic image is identified, based on image deformation amounts at plural positions in the first region of interest and the first tomographic image information, as a second tomographic image, and a region of interest in the second image corresponding to the first region of interest is identified, as a second region of interest. The first tomographic image and the second tomographic image onto which the second region of interest is projected are displayed. |
