发明申请
US20100027742A1 SHIFTING AN OBJECT FOR COMPLETE TRAJECTORIES IN ROTATIONAL X-RAY IMAGING
有权
在旋转X射线成像中移动完整轨道的对象
- 专利标题: SHIFTING AN OBJECT FOR COMPLETE TRAJECTORIES IN ROTATIONAL X-RAY IMAGING
- 专利标题(中): 在旋转X射线成像中移动完整轨道的对象
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申请号: US12441613申请日: 2007-09-17
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公开(公告)号: US20100027742A1公开(公告)日: 2010-02-04
- 发明人: Babak Movassaghi , Robert Manzke , Joel Alberto Garcia
- 申请人: Babak Movassaghi , Robert Manzke , Joel Alberto Garcia
- 申请人地址: NL Eindhoven
- 专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人地址: NL Eindhoven
- 优先权: EP06121190.0 20060925
- 国际申请: PCT/IB2007/053744 WO 20070917
- 主分类号: G01N23/04
- IPC分类号: G01N23/04 ; A61B6/04 ; H05G1/02
摘要:
It is described a method for acquiring a series of two-dimensional X-ray attenuation data of an object under examination (310) by means of an X-ray imaging apparatus (100) having a rotatable scanning unit (301). In order to increase the angular range of the scanning unit (301), when a region of interest (HOa) located not in the center of the object (310) is examined the object under examination (310) is shifted such that the region of interest is temporarily positioned outside the center of rotation. By coupling the rotational movement of the scanning unit (301) with the translative movement of the object (310) in a synchronized manner a collision between the scanning unit (301) and the object (310) can be effectively avoided. By employing an automated motorized object table (312) a precise pre-determined movement of the object (310) can be achieved during the data acquisition. By using an appropriate phantom based calibration procedure carried out with the same table movements known three-dimensional reconstruction algorithm can be directly applied in order to generate a three-dimensional representation of the region of interest (110a).