Method and apparatus for limiting a ray beam
US7212611B2 · kind B2 · utility
15Cited by
6References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 29, 2002 |
| Grant date | May 1, 2007 |
| Priority date | — |
| Expiry date | May 29, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention concerns a method and apparatus for limiting a ray beam, especially in connection with an x-ray imaging equipment. The invention comprises a collimator construction in which a primary blade element (4) is moved directly by means of an actuator (3) and where at least one secondary element (5, 20) is movable in connection with the primary element (4), but does not move dependent on the movements of it when the distance between the said elements (4, 5, 20) is within at least one certain operating range concerning them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.