Method and apparatus for CT image reconstruction
US8724889B2 · kind B2 · utility
1Cited by
3References
8Claims
0Family size
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Key dates
| Filing date | May 11, 2011 |
| Grant date | May 13, 2014 |
| Priority date | — |
| Expiry date | Mar 4, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/421
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for CT image reconstruction may include selecting, by a unit, projection data of the same height on a curve having a curvature approximate to that of the scanning circular orbit, implementing, by a unit, a weighting processing on the selected projection data, filtering, by a unit, the weighting processed projection data along a horizontal direction, implementing, by a unit, three-dimensional back projection on the filtered projection data along the direction of ray. The method and apparatus can effectively eliminate cone beam artifact under a large cone angle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.