Compact isocentric gantry
First Claim
1. An isocentric gantry configured to deliver particle radiation therapy to a patient, comprising:
- a plurality of dipole and quadrupole electromagnets arranged in a particle beam line and configured to change a direction of the particle beam line, the plurality of dipole and quadrupole electromagnets comprising at least one superconducting magnet and at least one ambient temperature magnet, wherein the isocentric gantry has a momentum acceptance ranging from approximately +/−
2% and +/−
10% without changing a setting of the plurality of dipole and quadrupole electromagnets; and
a support frame sized and configured to support the plurality of dipole and quadrupole electromagnets.
3 Assignments
0 Petitions
Accused Products
Abstract
A gantry for administering proton beam therapy with improvements which reduce the size, weight, costs and radiation beam loss associated with proton beam therapy systems currently commercially available. The gantry utilizes achromatic superconducting multi-function electromagnet systems wherein the magnets can include dipoles and quadrupoles. The achromatic properties of the rampable magnet systems allow for ease of transmission of the beam whose energy is rapidly changed through a large range of different energies without changing of the strength of the magnetic fields or dipole settings. The magnets may be made with either low or high temperature superconductors. The gantry design further integrates beam scanning but keeps the gantry isocentric. A much greater fraction of the beam can be transmitted through the gantry than with current art, thereby reducing radiation shielding requirements and the demand put on the accelerator to produce large quantities of proton beam.
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Citations
26 Claims
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1. An isocentric gantry configured to deliver particle radiation therapy to a patient, comprising:
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a plurality of dipole and quadrupole electromagnets arranged in a particle beam line and configured to change a direction of the particle beam line, the plurality of dipole and quadrupole electromagnets comprising at least one superconducting magnet and at least one ambient temperature magnet, wherein the isocentric gantry has a momentum acceptance ranging from approximately +/−
2% and +/−
10% without changing a setting of the plurality of dipole and quadrupole electromagnets; anda support frame sized and configured to support the plurality of dipole and quadrupole electromagnets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An isocentric gantry configured to deliver particle radiation therapy to a patient, comprising:
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a plurality of dipole and quadrupole electromagnets arranged in a particle beam line and configured to change a direction of the particle beam line, the plurality of dipole and quadrupole electromagnets comprising at least one superconducting magnet and at least one ambient temperature magnet; and a support frame sized and configured to support the plurality of dipole and quadrupole electromagnets. - View Dependent Claims (20)
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21. An isocentric gantry configured to deliver particle radiation therapy to a patient, comprising:
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a plurality of dipole and quadrupole electromagnets arranged in a particle beam line and configured to change a direction of the particle beam line, the plurality of dipole and quadrupole electromagnets comprising at least one superconducting magnet, at least one double bend achromat, and at least one ambient temperature magnet; and a support frame sized and configured to support the plurality of dipole and quadrupole electromagnets.
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22. An isocentric gantry configured to deliver particle radiation therapy to a patient, comprising:
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a plurality of dipole and quadrupole electromagnets arranged in a particle beam line and configured to change a direction of the particle beam line, the plurality of dipole and quadrupole electromagnets comprising at least one superconducting magnet, the plurality of dipole and quadropole electromagnets being configured to transmit the particle beam line whose energy is rapidly changed without changing a magnetic field strength or dipole settings; and a support frame sized and configured to support the plurality of dipole and quadrupole electromagnets.
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23. An isocentric gantry configured to deliver particle radiation therapy to a patient, comprising:
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a plurality of dipole and quadrupole electromagnets arranged in a particle beam line and configured to change a direction of the particle beam line, the plurality of dipole and quadrupole electromagnets comprising at least one superconducting magnet, wherein the plurality of dipole and quadrupole electromagnets further comprise a first double bend achromat arranged as dipole-quadrupole-quadrupole-quadrupole-dipole having an approximately 60 degree bend, and a second double bend achromat arranged as dipole-quadrupole-quadrupole-quadrupole-dipole having an approximately 150 degree bend; and a support frame sized and configured to support the plurality of dipole and quadrupole electromagnets.
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24. An isocentric gantry configured to deliver particle radiation therapy to a patient, comprising:
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a plurality of dipole and quadrupole electromagnets arranged in a particle beam line and configured to change a direction of the particle beam line, the plurality of dipole and quadrupole electromagnets comprising at least one superconducting magnet, wherein the plurality of dipole and quadrupole electromagnets further comprise a first double bend achromat arranged as dipole-quadrupole-quadrupole-quadrupole-dipole having an approximately 60 degree bend, a second double bend achromat arranged as dipole-quadrupole-quadrupole-quadrupole-dipole having an approximately 60 degree bend, and a third double bend achromat arranged as dipole-quadrupole-quadrupole-quadrupole-dipole having an approximately 90 degree bend; and a support frame sized and configured to support the plurality of dipole and quadrupole electromagnets.
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25. An isocentric gantry configured to deliver particle radiation therapy to a patient, comprising:
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a plurality of dipole and quadrupole electromagnets arranged in a particle beam line and configured to change a direction of the particle beam line, the plurality of dipole and quadrupole electromagnets comprising at least one superconducting magnet, wherein the plurality of dipole and quadrupole electromagnets further comprise at least one double bend achromat configured to change the direction of the particle beam line by an angle between approximately 45 degrees and 90 degrees; and a support frame sized and configured to support the plurality of dipole and quadrupole electromagnets.
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26. An isocentric gantry configured to deliver particle radiation therapy to a patient, comprising:
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a plurality of dipole and quadrupole electromagnets arranged in a particle beam line and configured to change a direction of the particle beam line, the plurality of dipole and quadrupole electromagnets comprising at least one superconducting magnet, the plurality of dipole and quadrupole electromagnets being configured to focus the particle beam line at an isocenter ranging from 1 to 10 millimeters root mean squared spot size; and a support frame sized and configured to support the plurality of dipole and quadrupole electromagnets.
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Specification