Apparatus and methods for magnetic control of radiation electron beam
AssigneesBoard of Regents, The University of Texas System, Tel-Hashomer Medical Research Infrastructure and Services Ltd. At the Chaim Sheba Medical Center
InventorsDirk Bartkoski, Dror Alezra, Mohammad Salehpour, Thomas Buchholz
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Abstract
Apparatus and methods for controlling a radiotherapy electron beam. Exemplary embodiments provide for focusing the electron beam at different depths by altering parameters of a plurality of magnets. Exemplary embodiments can also provide for focusing the electron beam at different depths while maintaining the energy level of the electron beam at a consistent level.
Claims20
An apparatus for controlling a radiotherapy electron beam, the apparatus comprising:
- an electron beam generator configured to generate an electron beam;
- a plurality of magnets producing a plurality of magnetic fields configured to focus the electron beam to a focal spot;
- and
- a control system configured to alter one or more parameters of the plurality of magnets to move the focal spot from a first location to a second location, wherein the first location is located at a first depth within a target region and the second location is located at a second depth within the target region.
A method of controlling a radiotherapy electron beam, the method comprising:
- generating an electron beam;
- directing the electron beam through a plurality of magnetic fields produced by a plurality of magnets;
- focusing the electron beam to a focal spot with the plurality of magnetic fields;
- and
- altering one or more parameters of the plurality of magnets to move the focal spot from a first location to a second location wherein the first location is located at a first depth within a target region and the second location is located at a second depth within the target region.
An apparatus for controlling a radiotherapy electron beam, the apparatus comprising:
- an electron beam generator configured to generate an electron beam with a power between 50 megaelectron volts and 250 megaelectron volts;
- a plurality of magnets configured to focus the electron beam at a focal spot;
- and
- a control system configured move the focal spot from a first location at a first depth to a second location at a second depth, wherein the power of the electron beam is maintained at a consistent level when the focal spot is moved from the first location to the second location.
A method of controlling a radiotherapy electron beam, the method comprising:
- generating an electron beam having a power between 50 megaelectron volts and 250 megaelectron volts;
- focusing the electron beam to a focal spot with a plurality of magnets;
- and
- moving the focal spot from a first location at a first depth to a second location at a second depth while maintaining the power of the electron beam at a consistent level.
Dependencies are inferred from the claim text.