发明授权
- 专利标题： Three dimensional back projection method and an X-ray CT apparatus
- 专利标题（中）： 三维反投影法和X射线CT装置
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申请号： US10360588申请日： 2003-02-08
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公开(公告)号： US06845144B2公开(公告)日： 2005-01-18
- 发明人: Akihiko Nishide , Sarah K. Patch
- 申请人： Akihiko Nishide , Sarah K. Patch
- 申请人地址： US WI Waukesha
- 专利权人： GE Medical Systems Global Technology Company, LLC
- 当前专利权人： GE Medical Systems Global Technology Company, LLC
- 当前专利权人地址： US WI Waukesha
- 代理机构： Armstrong Teasdale LLP
- 代理商 Carl B. Horton, Esq.
- 主分类号： A61B6/03
- IPC分类号： A61B6/03 ; G06T11/00
摘要：
To perform cone beam reconstruction by using projection data correctly corresponding to X-ray beam having passed through each pixel in the reconstruction area, data D1 is obtained which is plane projected to a plane based on projection data D0. Then, plane projection data D1 to the projection plane pp is projected to the reconstruction area in the direction of X-ray transmission to obtain back projection pixel data D2. Thereafter, back projection pixel data D2 will be added for each corresponding pixel for all views to obtain back projection data D3. The present invention provides reconstruction by device of projection data correctly corresponding to the X-ray beam having passed through the reconstruction area. Through the plane projection to a plane the operation will become simplified and faster.