PROBLEM TO BE SOLVED: To provide a new method for processing image data including esophagus, aorta, and atrium sinistrum with the use of one or more training images, and to provide a system.;SOLUTION: The method includes: the segmentation of one or more other objects in the image; the determination of the center line of one object in the image, on the basis of the segmentation of one or more training images and one or more other objects; and generation of an outer boundary with respect to the center line of one object. Then, the image data are processed by including one object and one or more other objects with the use of one or more training images.;COPYRIGHT: (C)2007,JPO&INPIT
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