X-ray Tomography system with stabilized detector response

Details X-ray Tomography system with stabilized detector response X-ray Tomography system with stabilized detector response

1996-06-21

1997-09-16

Porta, David P.

X-ray or gamma ray systems or devices

Specific application

Computerized tomography

378 7, 378154, A61B 603

Patent

active

056688512

ABSTRACT:
In a CT scanning system having an x-ray source, a plurality of x-ray detector modules, and a plurality of anti-scatter plate modules, signal instability and the associated introduction of artifacts into the reconstructed images are prevented by an alignment assembly which permits the anti-scatter plates to be substantially aligned with regions of substantially constant maximum sensitivity of corresponding detectors. Shadows cast by the anti-scatter plates fall entirely within these regions of substantially constant maximum sensitivity to radiation, thereby minimizing signal modulation due to thermal effects or relative movement of the source, the detectors and the anti-scatter plates between scans.

REFERENCES:
patent: 4338521 (1982-07-01), Shaw et al.
patent: 4866744 (1989-09-01), Yoshida
patent: 4987591 (1991-01-01), Bernardi
patent: 5025462 (1991-06-01), Saito et al.
patent: 5487098 (1996-01-01), Dobbs et al.

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