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Stable rotatable radiation gantry

  • US 6,969,194 B1
  • Filed: 05/30/2000
  • Issued: 11/29/2005
  • Est. Priority Date: 06/09/1999
  • Status: Expired due to Term
First Claim
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1. Irradiation device, comprisinga gantry;

  • said gantry comprising an inner gantry part and an outer gantry part;

    a radiation head, mechanically supported by said inner gantry part and rotatable around a rotation axis;

    said radiation head being arranged to direct radiation to a treatment volume situated substantially on said rotation axis;

    wherein all movable parts of said gantry are, in all situations, situated at a distance from said rotation axis larger than a predetermined value;

    said inner gantry part being rotatably supported by said outer gantry part at two support locations, situated on opposite sides of said treatment volume in a direction parallel to said axis;

    said outer gantry part being stationary with respect to said treatment volume;

    said radiation head being movable relative to said outer gantry along at least one arc of a circle substantially centered at said treatment volume;

    said arc being non-parallel with the rotation of said radiation head around said rotation axis, whereby non-coplanar irradiation treatment is achievable.

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