Systems and methods for focal spot motion detection and correction
US11141128B2 · kind B2 · utility
2Cited by
7References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2019 |
| Grant date | Oct 12, 2021 |
| Priority date | — |
| Expiry date | Mar 24, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/4476
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The techniques disclosed may be used to detect and correct channel gain errors resulting from X-ray focal spot mis-alignment during the course of a scan. One benefit of the present invention relative to conventional techniques is that additional hardware is not required for detection of focal spot drift. Instead, the static mis-alignment of each blade is taken into account as part of estimating and correcting X-ray focal spot drift or mis-alignment. In this manner, the risk of image artefacts due to focal spot motion is reduced and the need for costly hardware solutions to detect focal spot motion is avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.