| 摘要 |
A path 22 representing the center line of a curved cylinder 21 is acquired (step S 1 ). The path 22 can be set by a GUI while a volume rendering image displayed on a display device is viewed. Alternatively, the path 22 can be set automatically when the curved cylinder 21 is designated as a subject of observation. Then, a region of the curved cylinder 21 is extracted as a subject pf observation with the path 22 used as the center (step S 2 ). Then, sections 23 and 24 are generated as if the extracted region was cut open along the path 22 (step S 3 ). In this case, the sections 23 and 24 are curved along the curvature of the curved cylinder 21 . Accordingly, CPR images are synthesized on the curved sections (step S 4 ).
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