Non-uniform view weighting tomosynthesis method and apparatus

Details Non-uniform view weighting tomosynthesis method and apparatus Non-uniform view weighting tomosynthesis method and apparatus

2005-12-27

2005-12-27

Bruce, David V (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Tomography

C378S022000

Reexamination Certificate

active

06980624

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.

REFERENCES:
patent: 6542570 (2003-04-01), Silver
patent: 6778630 (2004-08-01), Silver et al.
patent: 2003/0123614 (2003-07-01), Silver et al.

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