发明申请
- 专利标题: METHOD AND APPARATUS FOR CT IMAGE RECONSTRUCTION
- 专利标题(中): CT图像重建方法与装置
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申请号: US13140761申请日: 2011-05-11
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公开(公告)号: US20120106832A1公开(公告)日: 2012-05-03
- 发明人: Liang Li , Zhiqiang Chen , Li Zhang , Kejun Kang , Yuxiang Xing , Ziran Zhao , Yongshun Xiao , Zhifeng Huang
- 申请人: Liang Li , Zhiqiang Chen , Li Zhang , Kejun Kang , Yuxiang Xing , Ziran Zhao , Yongshun Xiao , Zhifeng Huang
- 优先权: CN201010529974.0 20101028
- 国际申请: PCT/CN11/00830 WO 20110511
- 主分类号: G06K9/00
- IPC分类号: G06K9/00
摘要:
A method and apparatus for CT image reconstruction may include selecting, by a unit, projection data of the same height on a curve having a curvature approximate to that of the scanning circular orbit, implementing, by a unit, a weighting processing on the selected projection data, filtering, by a unit, the weighting processed projection data along a horizontal direction, implementing, by a unit, three-dimensional back projection on the filtered projection data along the direction of ray. The method and apparatus can effectively eliminate cone beam artifact under a large cone angle.
公开/授权文献
- US08724889B2 Method and apparatus for CT image reconstruction 公开/授权日:2014-05-13