公开(公告)号：WO2005023114A2

公开(公告)日：2005-03-17

申请号：PCT/IB2004051523

申请日：2004-08-23

Applicant: PHILIPS INTELLECTUAL PROPERTY ,  KONINKL PHILIPS ELECTRONICS NV ,  BONTUS CLAAS ,  KOEHLER THOMAS ,  GRASS MICHAEL

Inventor： BONTUS CLAAS ,  KOEHLER THOMAS ,  GRASS MICHAEL

IPC: A61B6/00 ,  A61B6/03 ,  G06T11/00

CPC classification number: A61B6/5217 ,  A61B6/027 ,  A61B6/032 ,  A61B6/4028 ,  A61B6/5264 ,  A61B6/527 ,  A61B6/541 ,  G06T11/005 ,  G06T11/006 ,  G06T2211/412

Abstract: The invention relates to a computer tomography method in which an examination area is passed through by a cone-shaped bundle of rays. The bundle of rays comes from a radiation source location which moves around the examination area on an overall trajectory. The overall trajectory consists of a first, closed partial trajectory, at least one second, closed partial trajectory and at least one third partial trajectory which connects the first and the at least one second partial trajectories to one another. Measured values which depend on the intensity in the bundle of rays on the other side of the examination area are acquired by means of a detector unit while the radiation source location is moving on the overall trajectory, and a CT image of the examination area is reconstructed from these measured values.

Abstract translation: 本发明涉及一种计算机断层摄影方法，其中检查区域通过锥形射线束。 射线束来自辐射源位置，其在整个轨迹上围绕检查区域移动。 整个轨迹由第一闭合部分轨迹，至少一个第二闭合部分轨迹以及将第一部分轨迹和至少一个第二部分轨迹彼此连接的至少一个第三部分轨迹组成。 在辐射源位置在整个轨迹上移动的同时，借助于检测器单元获取取决于检查区域的另一侧的光线束中的强度的测量值，并且重建检查区域的CT图像 从这些测量值。