High dose rate radiotherapy, system and method
AssigneeVarian Medical Systems, Inc.
InventorJames Clayton
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Abstract
A radiotherapy system includes an X-ray target configured to convert an incident electron beam into a therapeutic X-ray beam, a purging magnet configured to redirect unwanted particles emitted from the X-ray target away from the therapeutic X-ray beam, and a particle collector configured to absorb the unwanted particles subsequent to redirection by the purging magnet. The particle collector may be configured to dissipate at least 50% of the energy of the incident electron beam.
Claims24
A radiotherapy system comprising:
- an X-ray target configured to convert an incident electron beam into an X-ray beam, wherein the X-ray beam delivers a radiation rate of greater than or equal to 40 grays per second;
- a purging magnet configured to redirect unwanted particles emitted from said X-ray target away from said X-ray beam;
- and
- a particle collector configured to absorb said unwanted particles subsequent to a redirection by said purging magnet.
A radiotherapy system configured for a FLASH radiotherapy, said radiotherapy system comprising:
- a bremsstrahlung X-ray target configured to convert a portion of a stream of electrons into X-rays;
- a purging magnet configured to redirect particles escaping from said bremsstrahlung X-ray target while passing said X-rays;
- and
- a particle collector configured to absorb said escaping particles subsequent to a redirection by said purging magnet.
A method of operating a radiotherapy system, the method comprising:
- impinging an electron beam on an X-ray target to generate an X-ray beam, wherein said X-ray target includes metals having an atomic number greater than or equal to 42;
- redirecting unwanted particles out of the X-ray beam by a purging magnet;
- and
- absorbing said unwanted particles by a particle collector, wherein said particle collector includes materials having an atomic number less than 42.
Dependencies are inferred from the claim text.