Method for correcting non-reproducible geometric errors occurring during operation of a C-arm device
US7494278B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 23, 2006 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Feb 20, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B6/584
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
In a method for correcting non-reproducible geometric errors occurring during the operation of an x-ray C-arm device, having a C-arm carrying an x-ray source, during orbital displacement of the C-arm during a scan for 3D reconstruction of a subject volume, a 2D dataset, which is not impaired by non-reproducible geometric errors during the scan, is determined. This 2D dataset is compared to known projection matrices of the x-ray C-arm device, which compensate reproducible geometric errors of the C-arm device. The result of the comparison is used to modify the projection matrices of the scan to compensate non-reproducible geometric errors that occur during the scan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.