System for the detection and display of metal obscured regions in cone beam CT
US11593976B2 · kind B2 · utility
0Cited by
2References
15Claims
0Family size
Inventors
Key dates
| Filing date | Jan 9, 2017 |
| Grant date | Feb 28, 2023 |
| Priority date | — |
| Expiry date | Jan 9, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/436
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for rendering metal obscured regions in a volume radiographic image reconstructs a first 3D image using a plurality of 2D projection images obtained over a scan angle range relative to the subject and identifies metal in the first 3D image or metal shadows in the plurality of 2D projection images. Then, metal obscured regions are determined in a reconstructed 3D image of the object, and an alternative reconstruction being a limited angle reconstruction is performed for the metal obscured regions and displayed to the user with an indication of the spatial relationship to a corresponding metal obscured region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.