发明申请
US20100208969A1 ROTATION CENTER IDENTIFYING METHOD, RING ARTIFACT CORRECTION METHOD, ROTATION CENTER IDENTIFYING APPARATUS, X-RAY DIAGNOSTIC APPARATUS, RECORDING MEDIUM ON WHICH PROGRAM FOR EXECUTING ROTATION CENTER IDENTIFICATION IS RECORDED AND RECORDING MEDIUM ON WHICH PROGRAM FOR EXECUTING RING ARTIFACT CORRECTION IS RECORDED
有权
旋转中心识别方法，环形矫正方法，旋转中心识别装置，X射线诊断装置，执行旋转中心识别程序的记录介质记录和记录执行环锻炼校正程序的记录介质
- 专利标题： ROTATION CENTER IDENTIFYING METHOD, RING ARTIFACT CORRECTION METHOD, ROTATION CENTER IDENTIFYING APPARATUS, X-RAY DIAGNOSTIC APPARATUS, RECORDING MEDIUM ON WHICH PROGRAM FOR EXECUTING ROTATION CENTER IDENTIFICATION IS RECORDED AND RECORDING MEDIUM ON WHICH PROGRAM FOR EXECUTING RING ARTIFACT CORRECTION IS RECORDED
- 专利标题（中）： 旋转中心识别方法，环形矫正方法，旋转中心识别装置，X射线诊断装置，执行旋转中心识别程序的记录介质记录和记录执行环锻炼校正程序的记录介质
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申请号： US12388788申请日： 2009-02-19
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公开(公告)号： US20100208969A1公开(公告)日： 2010-08-19
- 发明人: Satoru Ohishi , Clay Christopher Smith
- 申请人： Satoru Ohishi , Clay Christopher Smith
- 主分类号： G06K9/00
- IPC分类号： G06K9/00 ; G06K9/40
摘要：
The influences of the vibrations and the like of a rotational radiography system are corrected with respect to a projection image for each projection direction which contains an artificial artifact, and volume data containing only a ring artifact is generated by image reconstruction using the projection images. A ring center is determined by using this volume data, and polar coordinate conversion of an actual radiographed image is executed by using the ring center as an origin, thereby extracting a signal (ring artifact) parallel to an angular axis.
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