Method of compensating for image faults in an x-ray image...

Details Method of compensating for image faults in an x-ray image... Method of compensating for image faults in an x-ray image...

2007-01-02

2007-01-02

Ho, Allen C. (Department: 2882)

X-ray or gamma ray systems or devices

Accessory

Testing or calibration

C378S062000, C378S154000, C378S205000

Reexamination Certificate

active

11144998

ABSTRACT:
Method for compensating for image faults in a digital image recording which has been created by an x-ray system consisting of a radiographic source, an anti-scatter grid and a digital x-ray detector such as an image amplifier or a solid-state image detector, said image faults resulting from decentering, defocusing or defects in the anti-scatter grid or by the Heel effect and causing an intensity reduction of the primary radiation falling on the x-ray detector, characterized in that the actual reduction in intensity is measured through the anti-scatter grid and correction parameters are determined based on the measured values recorded which are then used to correct the x-ray image recording.

REFERENCES:
patent: 5241578 (1993-08-01), MacMahon
patent: 5388143 (1995-02-01), MacMahon
patent: 6422750 (2002-07-01), Kwasnick et al.
patent: 6702459 (2004-03-01), Barnes et al.
patent: 7070328 (2006-07-01), Geiger et al.

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