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Radiotherapy device

  • US 5,317,164 A
  • Filed: 12/04/1992
  • Issued: 05/31/1994
  • Est. Priority Date: 12/06/1991
  • Status: Expired due to Fees
First Claim
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1. A radiotherapy device comprising:

  • radiation generation means for generating an electron beam;

    a guide tube of a small diameter attached at one end thereof to said radiation generation means, wherein said guide tube is adapted to be inserted at another end thereof into a body of a patient, said guide tube guiding said electron beam from said radiation generation means to said body of said patient;

    electron beam convergence means disposed along said guide tube, for converting said electron beam into a thin beam directed to an affected part of said body of said patient;

    deviation detector means for detecting a deviation of said electron beam from a center of said guide tube; and

    feedback control means coupled to said deviation detector means, for controlling said electron beam convergence means to adjust an orbit of said electron beam along a central axis of said guide tube in response to an output of said deviation detector means.

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