公开(公告)号：US4914681A

公开(公告)日：1990-04-03

申请号：US121060

申请日：1987-11-16

申请人： Klaus Klingenbeck ,  Arnulf Oppelt

发明人： Klaus Klingenbeck ,  Arnulf Oppelt

IPC分类号： G01N23/04 ,  A61B6/03 ,  H01J35/30 ,  H05G1/52

CPC分类号： A61B6/032 ,  A61B6/4028 ,  H01J35/30

摘要： A computer tomography apparatus has an annular anode surrounding a volume in which an examination subject is disposed, a source for generating an electron beam, and a coil through which the electron beam passes which deflects the electron beam so as to be incident on a face of the anode and to orbit the examination subject, thereby causing the examination subject to be irradiated in a measuring field from various directions. A control unit is provided for the coil causing the electron beam to be deflected so as to sweep the anode in both the azimuthal and radial directions. The focus of the electron beam on the anode surface thus describes a wave-shaped path, so that the focus path on the anode is lengthened and the thermal load is reduced.

摘要翻译： 计算机断层摄影装置具有围绕其中设置检查对象的体积的环形阳极，用于产生电子束的电子束的电子束通过的线圈，偏转电子束以使其入射到 阳极并且对检查对象轨道进行检查，从而使得检查对象在来自各个方向的测量场中被照射。 为线圈提供一个控制单元，使得电子束被偏转，以便在方位角和径向方向上扫描阳极。 因此，电子束在阳极表面上的焦点描述了波形路径，使得阳极上的聚焦路径被延长并且热负荷减小。