Particle beam therapy device
AssigneeSumitomo Heavy Industries, Ltd.
InventorHiroshi Tsutsui
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Abstract
A particle beam therapy device that irradiates a patient with a cation beam to perform treatment, the device including a passage selection unit that selectively passes through the cation beam among a mixed beam in which the cation beam and other species of a beam having a nuclide different from that of the cation beam are mixed after passing through a deflection magnetic field, after causing the mixed beam to pass through the deflection magnetic field, in a case where the other species of the beam is generated from the cation beam.
Claims13
A particle beam therapy device that irradiates a patient with a cation beam to perform treatment, the device comprising:
- an accelerator that emits the cation beam;
- an irradiator that irradiates the patient with the cation beam;
- and
- a transporter that transports the cation beam emitted from the accelerator to the irradiator and includes
- a bending electromagnet configured to generate a deflection magnetic field, and
- a passage that includes
- an opening configured to selectively allow the cation beam in a mixed beam to pass through the deflection magnetic field, in a case where other species of a beam is generated from the cation beam, the mixed beam being a beam in which the cation beam and the other species of the beam having a nuclide different from that of the cation beam are mixed, and
- a shield configured to shield the other species of the beam having a nuclide different from that of the cation beam in the mixed beam.
A particle beam therapy device that irradiates a patient with a cation beam to perform treatment, the device comprising:
- a cyclotron that emits the cation beam;
- a degrader that is provided on a downstream side of the cyclotron, reduces energy of the cation beam, and generates other species of a beam having a nuclide different from that of the cation beam from the cation beam when the energy is reduced;
- a bending electromagnet that is provided on a downstream side of the degrader and is configured to generate a deflection magnetic field and deflect a mixed beam in which the cation beam and the other species of the beam are mixed to cause a trajectory of a beam included in the mixed beam to be different depending on momentum per unit charge;
- and
- a passage provided on a downstream side of the bending electromagnet and includes
- an opening configured to selectively allow the beam included in the mixed beam to pass through at a position of a trajectory of the cation beam in the mixed beam, and
- a shield configured to shield the beam included in the mixed beam at a position other than the position of the trajectory of the cation beam in the mixed beam.
Dependencies are inferred from the claim text.