Low-cost estimation and/or tracking of intra-scan focal-spot displacement
US12176099B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2022 |
| Grant date | Dec 24, 2024 |
| Priority date | — |
| Expiry date | May 23, 2043 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/582
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Systems/techniques that facilitate low-cost estimation and/or tracking of intra-scan focal-spot displacement are provided. In various embodiments, a system can cause a medical imaging scanner to perform an air scan. In various aspects, the system can access data produced by the medical imaging scanner and relating to the air scan, where the data can include a set of gantry angles swept by an X-ray tube during the air scan, where the data can include a set of intensity value matrices recorded by a multi-channel-multi-row detector during the air scan, and where the set of intensity value matrices respectively correspond to the set of gantry angles. In various instances, the system can compute a set of channel-spanning intensity slopes based on the set of intensity value matrices. In various cases, the system can apply a slope-to-displacement transfer function to the set of channel-spanning intensity slopes, thereby yielding a set of focal-spot displacements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.