CONSTRUCTION METHOD AND PROGRAM FOR THREE-DIMENSIONAL MODEL OF ORGAN

摘要

PROBLEM TO BE SOLVED: To provide a construction method for a three-dimensional model of an organ capable of constructing a final three-dimensional model in a natural shape without manual adjustment.SOLUTION: A tomographic equipment 2 images tomographic images of an organ over a plurality of layers (S1) and an image processing workstation 1 extracts border lines showing exterior or inner surfaces of the organ from the obtained images (S3). A three-dimensional polygon processing positions a plurality of points on the extracted border lines, selects a pair of link object points from points positioned on two adjacent layers, and connects the pair of link object points with a line to form a triangle polygon to construct a three-dimensional model (S11). When selecting link object points, tangential directions at the respective points need to be considered. If the directions differ, the distance between the points is adjusted in the way that the distance is longer as the direction difference is larger. Then, points of a shorter distance therebetween are selected as link object points.