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Ion radiation therapy system with rocking gantry motion

  • US 8,093,568 B2
  • Filed: 02/27/2008
  • Issued: 01/10/2012
  • Est. Priority Date: 02/27/2007
  • Status: Active Grant
First Claim
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1. An ion therapy machine comprising:

  • a patient support supporting a patient along an axis;

    a gantry positionable over a range of angles about the axis to direct a beam of ions toward the patient from positions within the range;

    an ion beam controller supported by the gantry at the positions, independently controlling an energy and intensity of ions within a plurality of beamlets within the beam;

    a neutron stop positioned on an opposite side of the patient from the gantry and having at least a stationary portion to receive neutrons from the patient throughout a corresponding range of angles opposite the axis with respect to the range of angles of the gantry; and

    wherein the range of angles is constrained to be less than 360°

    .

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