Fractional monitor unit radiation delivery control using dose rate modulation
US6577709B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 7, 2001 |
| Grant date | Jun 10, 2003 |
| Priority date | — |
| Expiry date | Jun 17, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05G1/44
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Method and system aspects for achieving more accurate radiation delivery during radiation treatment by a radiation-emitting system are described. In a method aspect, and system for achieving same, the method includes providing a table of dose rate values for accumulated dosages in a treatment unit of the radiation emitting system, and controlling a dose rate of radiation emitted from the radiation emitting system through utilization of the table of dose rates. Controlling further includes determining an accumulated dosage at a sampling point, and comparing the accumulated dosage to a total desired dosage. The dose rate is adjusted based on the table of dose rate values and the determined accumulated dosage, with the dose rate ramped down as the accumulated dosage nears the total desired dosage. Accumulated dosages include fractional numbers of monitor units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.