X-ray or gamma ray systems or devices – Specific application – Mammography
Patent
1983-07-11
1986-01-07
Smith, Alfred E.
X-ray or gamma ray systems or devices
Specific application
Mammography
128754, 378164, 378180, A61B 604, A61B 1000, G03B 4202, H05G 128
Patent
active
045637687
ABSTRACT:
A mammographic device comprises an X-ray source for emitting X-rays along a predetermined path, a film holder disposed in the predetermined path of the X-rays for holding film to be exposed to the X-rays, a compression plate disposed in the predetermined path of the X-rays, and positionable for compressing, and holding in position, against the film holder a woman's breast to be X-rayed, and a suspension arrangement disposed between the X-ray source and the compression plate for holding the X-ray source and the compression plate in a fixed relative mutual position so that the distance between the X-ray source and the compression plate remains constant. In a preferred embodiment of the invention, the compression plate holder and compression plate are formed into an integral structure made of plexiglass. Preferably, the compression plate contains a matrix pattern of holes or perforations for facilitating biopsy guidance and needle aspiration cytology.
REFERENCES:
patent: 3365575 (1968-01-01), Strax
patent: 3547121 (1970-12-01), Cherry
patent: 4048507 (1977-09-01), Gaston
patent: 4090084 (1978-05-01), Epstein et al.
patent: 4259585 (1981-03-01), Novak et al.
Muhlow, "A Device for Precision Needle Biopsy of the Breast at Mammograph," AJR 121: 843-845, 1974.
Boswell Ronald L.
Read Mark E.
Byrne John J.
Grigsby T. N.
Kile Bradford E.
O'Brien Kevin M.
Smith Alfred E.
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