Beam hardening filter for x-ray source
US6157703A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 6, 1998 |
| Grant date | Dec 5, 2000 |
| Priority date | — |
| Expiry date | Oct 6, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG21K1/10
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An x-ray beam hardening filter is disclosed. The x-ray beam hardening filter comprises a support member and a beam hardening sheet, the beam hardening sheet having a multidimensional array of regularly spaced apertures. The apertures are configured to have an x-ray transmissive quality. An actuator, engaging the support member, is capable of moving the multidimensional array of apertures into or out of a path of an x-ray beam, thereby selectively introducing varying levels of x-ray energy filtration. In one embodiment, multiple layers of beam hardening sheets are added to the x-ray beam hardening filter to create additional levels of x-ray energy filtration. Advantages of the x-ray beam hardening filter include the relatively small distance the x-ray beam hardening filter must move in order to absorb the incident x-ray beam, the ability to introduce varying levels of x-ray filtration, and the compact structure of the x-ray beam hardening filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.