Radiation diaphragm in device having two diaphragms, and method for scanning a subject therewith
US7403597B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 21, 2006 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | Jun 21, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
in a diaphragm device for an x-ray apparatus for scanning a subject with a radiation beam and a scanning method using such a diaphragm device, the diaphragm device has at least two diaphragms. For at least one segment of the scan, the radiation beam that has been adjusted with the first diaphragm can be at least partially dynamically masked by the second diaphragm. High adjustment precisions for precise exposure of a measurement field of detector and high adjustment speed for masking of a radiation beam that is not needed for reconstruction of an image, or for reduction of a radiation exposure of the subject can be implemented to equal degree with the two diaphragms that are separate from one another.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.