Non-uniform view weighting tomosynthesis method and apparatus
US6980624B2 · kind B2 · utility
17Cited by
2References
21Claims
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Key dates
| Filing date | Nov 26, 2003 |
| Grant date | Dec 27, 2005 |
| Priority date | — |
| Expiry date | Mar 22, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2211/436
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A technique is provided for non-uniform weighting in back-projection calculations in tomosythesis. The non-uniform weighting may include weighting based on a count map of the number of times pixels of individual slices are traversed by radiation in different projections. Weighting may also include non-uniform functions for contributions of features at different slice level to the sensed X-ray attenuation system response inconsistencies are accounted for by further weighting based upon projection maps which may be created in separate system calibration or configuration routines.
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