Particle beam scanning
AssigneeMevion Medical Systems, Inc.
InventorsGerrit Townsend Zwart, James Cooley, Ken Yoshiki Franzen, Mark R. Jones, Tao Li, Michael Busky
Life of this patent
Estimating the term…
Abstract
An example particle therapy system includes: a synchrocyclotron to output a particle beam; a magnet to affect a direction of the particle beam to scan the particle beam across at least part of an irradiation target; scattering material that is configurable to change a spot size of the particle beam, where the scattering material is down-beam of the magnet relative to the synchrocyclotron; and a degrader to change an energy of the beam prior to output of the particle beam to the irradiation target, where the degrader is down-beam of the scattering material relative to the synchrocyclotron.
Claims46
A particle therapy system comprising:
- a synchrocyclotron to output a particle beam;
- a magnet to affect a direction of the particle beam to scan the particle beam across at least part of an irradiation target;
- and
- scattering material that is configurable to change a spot size of the particle beam prior to output of the particle beam to the irradiation target.
The particle therapy system of claim 9, wherein scanning performed by the particle therapy system is spot scanning;
- and
- wherein the spot size is changeable from scan-location to scan-location.
A particle therapy system comprising:
- a synchrocyclotron to output a particle beam;
- a scanning system to receive the particle beam from the synchrocyclotron and to perform spot scanning of at least part of an irradiation target with the particle beam, the scanning system being controllable to change a spot size of the particle beam;
- and
- a gantry on which the synchrocyclotron and at least part of the scanning system are mounted, the gantry being configured to move the synchrocyclotron and at least part of the scanning system around the irradiation target.
A particle therapy system comprising:
- a synchrocyclotron to output a particle beam;
- a scanning system to receive the particle beam from the synchrocyclotron and to perform scanning of at least part of an irradiation target with the particle beam;
- and
- one or more processing devices to control the scanning system to scan a cross-section of the irradiation target according to an irregular grid pattern.
A particle therapy system comprising:
- a synchrocyclotron to output a particle beam;
- a magnet to affect a direction of the particle beam to scan the particle beam across a cross-section of an irradiation target;
- and
- one or more processing devices to control the magnet to scan the cross-section of the irradiation target according to an irregular grid pattern, and to control an energy of the particle beam between scanning of different cross-sections of the irradiation target.
Dependencies are inferred from the claim text.