公开(公告)号：US20160027606A1

公开(公告)日：2016-01-28

申请号：US14781404

申请日：2014-04-02

Applicant: HELMHOLTZ-ZENTRUM DRESDEN-ROSSENDORF E.V.

Inventor： Frank BARTHEL

IPC: H01J35/14 ,  H01J35/08 ,  H05G1/02

CPC classification number: H01J35/14 ,  H01J35/08 ,  H01J35/30 ,  H01J2235/163 ,  H05G1/02

Abstract: A system for electron beam X-ray computer tomography, which requires no considerable axial extension of the electron emitter and substantially eliminates electron-optical beam guidance elements is provided by disposing an X-ray detector arc and the target around the examination cross-section within an irradiation plane, and radially introducing an electron beam generated in the electron beam generator into the magnetic flux region of one or more longitudinal coils from within or outside the coils and forcing the same onto a circular path by way of the magnetic field. By periodically changing the field strength, the radius of the circular path is increased, as a result of which the electron beam impinges on the target in a tangentially migrating focal spot. Radiography projections of the object located in the center of the system are recorded by the X-ray detector surrounding the target, the target and x-ray detector planes being with or without axial offset.

Abstract translation: 一种电子束X射线计算机断层摄影系统，其不需要电子发射器的相当大的轴向延伸并且基本上消除电子束引导元件，是通过将X射线检测器电弧和目标围绕检查横截面设置在 照射平面，并且将从电子束发生器中产生的电子束径向地引入到线圈内部或外部的一个或多个纵向线圈的磁通量区域中，并且通过磁场将其强制到圆形路径上。 通过周期性地改变场强，循环路径的半径增加，结果电子束在切向迁移的焦斑中撞击靶。 位于系统中心的物体的射线照相投影由围绕目标的X射线检测器记录，目标和X射线检测器平面具有或不具有轴向偏移。