Rapid filtration methods for dual-energy X-ray CT
US11337663B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2017 |
| Grant date | May 24, 2022 |
| Priority date | — |
| Expiry date | Jul 17, 2037 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/5205
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems and method for performing X-ray computed tomography (CT) that can improve spectral separation and decrease motion artifacts without increasing radiation dose are provided. The systems and method can be used with either a kVp-switching source or a single-kVp source. When used with a kVp-switching source, an absorption grating and a filter grating can be disposed between the X-ray source and the sample to be imaged. Relative motion of the filter and absorption gratings can by synchronized to the kVp switching frequency of the X-ray source. When used with a single-kVp source, a combination of absorption and filter gratings can be used and can be driven in an oscillation movement that is optimized for a single-kVp X-ray source. With a single-kVp source, the absorption grating can also be omitted and the filter grating can remain stationary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.