System and method for iterative image reconstruction
US8897528B2 · kind B2 · utility
5Cited by
4References
20Claims
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Key dates
| Filing date | Jun 30, 2011 |
| Grant date | Nov 25, 2014 |
| Priority date | — |
| Expiry date | Apr 11, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/424
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods are provided for iteratively reconstructing an image signal to generate a reconstructed image signal. In one embodiment, sub-iterations of each iteration are performed on pixel or voxel subsets. The subsets may be composed of neighboring or spatially separated pixel or voxels and may extend in the z-direction. In one embodiment, an update step of the iterative reconstruction involves the direct inversion of an approximation of a Hessian matrix associated with the respective subsets. In further embodiments, non-negativity or other limitations or constraints on update values may be enforced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.