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System for the Delivery of Proton Therapy

  • US 20080023644A1
  • Filed: 02/19/2005
  • Published: 01/31/2008
  • Est. Priority Date: 04/27/2004
  • Status: Active Grant
First Claim
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1. A system for an intensity-modulated proton therapy of a predetermined volume within an object, comprising:

  • a) a proton source in order to generate a proton beam being adjustable with respect to beam intensity;

    b) a degrader being optionally disposable in the proton beam in order to attenuate the energy of the protons in the proton beam to a desired proton energy in the proton beam;

    c) a number of proton beam bending and/or focusing units;

    d) a beam nozzle having an outlet for the proton beam to penetrate the predetermined volume of the object;

    e) a beam bending magnet being disposed upstream of the nozzles; and

    f) a couple of sweeper magnets being disposed upstream of said beam bending magnet in order to sweep the proton beam in both lateral directions before the proton beam enters into the beam bending magnet, g) said beam nozzle is defining a cross-sectional scanning area substantially perpendicular to the proton beam in a range of 10 to 30 cm2, and h) said sweeper magnets and said beam bending magnet are controlled in order to guarantee a parallel beam orientation over the complete cross-sectional scanning areas.

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