PROBLEM TO BE SOLVED: To generate a plurality of cross-sectional images including a designation point indicating a region of interest in three-dimensional image data and including characteristic points to be sequentially selected.SOLUTION: An image processor includes an acquisition part for acquiring three-dimensional image data and the positions of a plurality of characteristic points in the three-dimensional image data, a designation part for designating a designation point indicating a region of interest in the three-dimensional image data, a selection part for selecting a characteristic point to be used to generate a cross-sectional image of the three-dimensional image data among the plurality of characteristic points on the basis of a determined selection sequence, a generation part for generating a cross-sectional image including a surface determined on the basis of the position of the designation point and the position of the selected characteristic point from the three-dimensional image data, and a display control part for displaying the generated cross-sectional image in a display part.SELECTED DRAWING: Figure 5COPYRIGHT: (C)2016,JPO&INPIT
