Brachytherapy apparatus and methods
US6846282B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 9, 2000 |
| Grant date | Jan 25, 2005 |
| Priority date | — |
| Expiry date | Jun 9, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N2005/1011
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Brachytherapy is carried out with a needle to inject a radioactive seed into a patient's body. A space-fixed detector detects radiation from radiation emitters to determine the position of a deposited seed from the needle with reference to a space-fixed coordinate system. Markers may be affixed to the patient's body such that a body-fixed coordinate system can be determined in real time by an imaging device. Alternatively, earlier obtained patient's anatomical data may be referenced. After positions of earlier injected seeds are thus ascertained in real time in the body-fixed coordinate system, the stored anatomical data may be updated and a radiation dose distribution can be calculated from the determined seed positions. The calculated radiation dose distribution can be displayed and compared with a planned distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.