| 摘要 |
PROBLEM TO BE SOLVED: To improve accuracy of three-dimensional extraction of the left ventricle of the heart. SOLUTION: A contour extraction part 20 sets a plurality of cross sections corresponding to the minor axis cross section between a cardiac apex and an annulus part inside a three-dimensional data space and extracts the contour of the left ventricle for each cross section. A sample point setting part 22 sets a plurality of sample points along the contour of the left ventricle inside each cross section. An interpolation processing part 24 forms a plurality of interpolation curves from the cardiac apex to the side of the annulus part by interpolation processing utilizing the plurality of sample points made to correspond to each other over the plurality of cross sections and a reference point corresponding to the cardiac apex, and extends the respective interpolation curves to a reference plane corresponding to the annulus part. In such a manner, the three-dimensional contour line of the left ventricle comprising the plurality of interpolation curves connecting the reference point corresponding to the cardiac apex of the left ventricle and the reference plane corresponding to the annulus part of the left ventricle is formed. COPYRIGHT: (C)2010,JPO&INPIT |
