Compact gantry for particle therapy
First Claim
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1. An isocentric gantry designed for rotating around an axis of rotation and for delivering a particle beam for use in particle therapy comprising:
- a gantry beam line having a gantry entrance point (25) for entering said particle beam into the gantry in a direction essentially parallel with the axis of rotation;
a first (20), a second (21) and a third (22) dipole magnet sequentially arranged for successively bending the particle beam in a single plane and for delivering said particle beam at an isocenter (27) in a direction essentially perpendicular to the axis of rotation;
quadrupole magnets (24) for focussing and defocusing said particle beam;
wherein said third dipole magnet (22) has a bending angle smaller than 80°
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Abstract
The present invention relates to a particle therapy apparatus used for radiation therapy. More particularly, this invention relates to a compact isocentric gantry for delivering particle beams perpendicularly to a rotation axis of the gantry. The gantry comprises three dipole magnets. The angle of the last dipole magnet is smaller than 90° and a most preferred bending angle for this last dipole magnet is 60°.
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Citations
10 Claims
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1. An isocentric gantry designed for rotating around an axis of rotation and for delivering a particle beam for use in particle therapy comprising:
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a gantry beam line having a gantry entrance point (25) for entering said particle beam into the gantry in a direction essentially parallel with the axis of rotation; a first (20), a second (21) and a third (22) dipole magnet sequentially arranged for successively bending the particle beam in a single plane and for delivering said particle beam at an isocenter (27) in a direction essentially perpendicular to the axis of rotation; quadrupole magnets (24) for focussing and defocusing said particle beam; wherein said third dipole magnet (22) has a bending angle smaller than 80°
. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification