PROBLEM TO BE SOLVED: To provide an image processor for generating a cross-sectional image including a designation point indicating a region of interest in three-dimensional image data and including image characteristics to be referenced.SOLUTION: An image processor 100 includes an acquisition part 102 for acquiring three-dimensional image data, and the positions of a plurality of characteristic points in the three-dimensional image data, a designation part 106 for designating a designation point indicating a region of interest in the three-dimensional image data, a selection part 108 for using information determined by the position of the designation point and the positions of the plurality of characteristic points to select a characteristic point among the plurality of characteristic points, a generation part 112 for generating a cross-sectional image of 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 114 for displaying the generated cross-sectional image in a display part 180.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT
