发明申请
- 专利标题: METHOD AND SYSTEM FOR GENERATING AN X-RAY BEAM
- 专利标题(中): 用于产生X射线光束的方法和系统
-
申请号: US12992409申请日: 2009-05-08
-
公开(公告)号: US20110064202A1公开(公告)日: 2011-03-17
- 发明人: Axel Thran , Peter Forthmann , Roland Proksa , Thomas Koehler
- 申请人: Axel Thran , Peter Forthmann , Roland Proksa , Thomas Koehler
- 申请人地址: NL EINDHOVEN
- 专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人: KONINKLIJKE PHILIPS ELECTRONICS N.V.
- 当前专利权人地址: NL EINDHOVEN
- 优先权: CN200810099548.0 20080515
- 国际申请: PCT/IB09/51906 WO 20090508
- 主分类号: H01J35/08
- IPC分类号: H01J35/08 ; H01J35/00 ; H01J35/06 ; H01J35/30
摘要:
To scan an object with differently shaped cone beams (112, 122), the present invention provides a CT scanner with a moveable X-ray tube (the meaning of “move the x-ray tube among a plurality of predefined positions” also covers the situation that the anode disk is moved among a plurality of corresponding positions, while the shell of the x-ray tube does not move). The X-ray tube is not only moveable along the axial direction, but also along the radial direction of the CT scanner gantry. The scanner comprises an X-ray tube, which X-ray tube further comprises: an anode disk (100), comprising a plurality of focal tracks (110, 120) each focal track being cone-shaped with an anode angle (114, 124) different from the anode angle(s) of the other focal track(s); and a first cathode (210), configured to emanate an electron beam targeting at least one of the plurality of focal tracks. When different focal tracks are bombarded by electron beams, different X-ray beams (112, 122) with differently shaped cone beams are generated.