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Charged particle cancer therapy x-ray method and apparatus

  • US 8,625,739 B2
  • Filed: 08/19/2011
  • Issued: 01/07/2014
  • Est. Priority Date: 07/14/2008
  • Status: Active Grant
First Claim
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1. An X-ray apparatus as part of a particle beam cancer therapy system, said particle beam cancer therapy system irradiating a tumor of a patient with a charged particle beam during use, said apparatus comprising:

  • an X-ray generation source located within forty millimeters of the charged particle beam, wherein said X-ray source maintains a single static position;

    (1) during use of said X-ray source and (2) during tumor treatment with the charged particle beam;

    an electron generating cathode;

    a control electrode;

    a plurality of accelerating electrodes;

    a magnetic lens; and

    a quadrupole magnet, all of said control electrode, said accelerating electrodes, said magnetic lens, and said quadrupole magnet located between said cathode and an X-ray generating anode in said X-ray generation source, said control electrode, said accelerating electrodes, said magnetic lens, and said quadrupole magnet combining to form a substantially parallel electron beam with an electron beam cross-sectional area, wherein a cross-sectional area of said cathode is greater than about eight times that of the electron beam cross-sectional area,wherein X-rays emitted from said X-ray source run substantially in parallel with the charged particle beam, andwherein said substantially parallel electron beam comprises an oblong cross-sectional shape, wherein geometry of said X-ray generation source yields an X-ray beam comprising a nearly circular cross sectional shape when struck by the electron beam having said oblong cross-sectional shape, the X-ray beam running substantially in parallel with the charged particle beam.

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