Increased beam output and dynamic field shaping for radiotherapy system
US11007381B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2018 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Nov 16, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1095
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and methods provide radiotherapy treatment by focusing an electron beam on an x-ray target (e.g., a tungsten plate) to produce a high-yield x-ray output with improved field shaping. A modified electron beam spatial distribution is employed to scan the x-ray target, such as a 2D periodic beam path, which advantageously lowers the x-ray target temperature compared to the typical compact beam spatial distribution. As a result, the x-ray target can produce a high yield output without sacrificing the x-ray target life span. The use of a 2D periodic beam path allows a much colder x-ray target functioning regime such that more dosage can be applied in a short period of time compared to existing techniques.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.