X-ray diagnostics apparatus for mammography examinations

Details X-ray diagnostics apparatus for mammography examinations X-ray diagnostics apparatus for mammography examinations

1992-04-03

1992-12-08

Church, Craig E.

X-ray or gamma ray systems or devices

Specific application

Mammography

378181, A61B 604

Patent

active

051704196

ABSTRACT:
An x-ray diagnostics apparatus for mammography examinations has an x-ray tube which is rotatable, via a horizontal shaft, around a bearing mounted in a stand, and having at least two cassette holders which can selectively individually be brought to an exposure position. The cassette holders are pivotable around the horizontal shaft so that when one cassette holder is situated in the exposure position, the other cassette holder is in a standby position. In order to make the apparatus relatively small and easily manipulable, the rotational axis of the horizontal shaft is disposed in approximate axial alignment with the middle of the examination subject, and the cassette holders are secured in a mount which is rotatably attached to the horizontal shaft, so that the standby position for each cassette holder is behind the x-ray tube, as seen by the examination subject. Rotation of the mount around the shaft is such that the cassette holders have approximately the same spacing from the rotational axis of the shaft when they are respectively situated in the exposure position.

REFERENCES:
patent: 4394771 (1983-07-01), Charrier
patent: 4578801 (1986-03-01), Oliver
patent: 4613982 (1986-09-01), Dornheim et al.
patent: 4879736 (1989-11-01), Bergman et al.

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