Method, system and storage medium for reference...

Details Method, system and storage medium for reference... Method, system and storage medium for reference...

2006-02-07

2006-02-07

Bruce, David V. (Department: 2882)

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

C378S004000

Reexamination Certificate

active

06996206

ABSTRACT:
A method for performing reference normalization for an image created by an imaging system. The imaging system includes a radiation detector array with a right and left edge. The method includes receiving a projection dataset created by the imaging system in response to a varying x-ray tube current. The projection dataset includes a view and predicted fluxes are calculated for the set of reference channels within the view. A right set of reference channels are located proximate at the right edge of the detector array and a left set of reference channels are located proximate to the left edge of the detector array. The method also includes calculating average actual fluxes for the sets of reference channels. Based on the predicted reference fluxes and the average fluxes, a reference correction value for the view is determined. The correction value is applied for the reference correction of the view.

REFERENCES:
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patent: 4809314 (1989-02-01), Steele et al.
patent: 5430785 (1995-07-01), Pfoh et al.
patent: 5761257 (1998-06-01), Toth et al.
patent: 6529575 (2003-03-01), Hsieh

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