Invention Grant
- Patent Title: Method and apparatus for CT image reconstruction
- Patent Title (中): CT图像重建方法和装置
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Application No.: US13140761Application Date: 2011-05-11
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Publication No.: US08724889B2Publication Date: 2014-05-13
- Inventor: Liang Li , Zhiqiang Chen , Li Zhang , Kejun Kang , Yuxiang Xing , Ziran Zhao , Yongshun Xiao , Zhifeng Huang
- Applicant: Liang Li , Zhiqiang Chen , Li Zhang , Kejun Kang , Yuxiang Xing , Ziran Zhao , Yongshun Xiao , Zhifeng Huang
- Applicant Address: CN Beijing CN Beijing
- Assignee: Tsinghua University,Nuctech Company Limited
- Current Assignee: Tsinghua University,Nuctech Company Limited
- Current Assignee Address: CN Beijing CN Beijing
- Agency: Kenyon & Kenyon LLP
- Priority: CN201010529974 20101028
- International Application: PCT/CN2011/000830 WO 20110511
- International Announcement: WO2012/055147 WO 20120503
- Main IPC: G06K9/00
- IPC: G06K9/00 ; A61B6/00 ; G01N23/00 ; G21K1/12 ; H05G1/60
Abstract:
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.
Public/Granted literature
- US20120106832A1 METHOD AND APPARATUS FOR CT IMAGE RECONSTRUCTION Public/Granted day:2012-05-03
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