X-ray beam-shaping filter and X-ray imaging machine incorporatin

Details X-ray beam-shaping filter and X-ray imaging machine incorporatin X-ray beam-shaping filter and X-ray imaging machine incorporatin

1998-11-02

2000-11-14

Porta, David P.

X-ray or gamma ray systems or devices

Beam control

Filter

378157, 378159, G21K 300

Patent

active

061480622

ABSTRACT:
A filter having compensating plates, each having a first plate element which can be moved translationally with respect to a frame and a second plate element which can be moved relative to the first plate element so that, when the plates are in an active position, the thickness of absorbent material through which the X-ray beam passes is constant.

REFERENCES:
patent: 3115580 (1963-12-01), Brewer
patent: 4219734 (1980-08-01), Chery
patent: 4233519 (1980-11-01), Coad
patent: 4947417 (1990-08-01), Coad
patent: 5086444 (1992-02-01), Bartmann
patent: 5200986 (1993-04-01), Schlie
patent: 5991362 (1999-11-01), Jones

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