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US 10,258,810 B2Granted
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.
Claims40
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 the particle beam reaching the irradiation target;
- wherein scanning performed by the particle therapy system is spot scanning;
- wherein the spot size is changeable from scan-location to scan-location;
- and
- wherein the spot size is changeable on a time scale on the order of tenths of a second.
5 more elements
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 the particle beam reaching the irradiation target;
- wherein the scattering material comprises piezoelectric material that is responsive to an applied voltage to increase or to decrease in thickness.
2 more elements
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 the particle beam reaching the irradiation target;
- wherein the spot size is changeable on a time scale on the order of tens of milliseconds.
2 more elements
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;
- wherein the spot size is changeable on a time scale on the order of tenths of a second.
2 more elements
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;
- wherein the scanning system comprises:
- structures to move the particle beam output from the synchrocyclotron in three-dimensions relative to the irradiation target;
- and
- scattering material, among the structures, that is configurable to change the spot size of the particle beam;
- and
- wherein the scattering material comprises piezoelectric material that is responsive to an applied voltage or to increase or to decrease in thickness.
7 more elements
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;
- wherein the spot size is changeable on a time scale on the order of tens of milliseconds.
2 more elements
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;
- scattering material that is configurable to change a spot size of the particle beam prior to the particle beam reaching the irradiation target;
- and
- a degrader to change an energy of the particle beam prior to the particle beam reaching the irradiation target, the degrader being down-beam of the scattering material relative to the synchrocyclotron;
- wherein the spot size is changeable on a time scale on the order of tenths of a second or less.
3 more elements
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 degrader to change an energy of the particle beam prior to the particle beam reaching the irradiation target;
- wherein the spot size is changeable on a time scale on the order of tenths of a second.
3 more elements
Dependencies are inferred from the claim text.