X-Ray field defining mask

Details X-Ray field defining mask X-Ray field defining mask

1982-11-10

1984-10-09

Smith, Alfred E.

X-ray or gamma ray systems or devices

Photographic detector support

For plural exposures on single film or plate

378147, A61B 600

Patent

active

044765690

ABSTRACT:
In a spot film device, a cassette assembly for a film cassette is mounted for reciprocating in a tunnel between an X-ray exposure position and a position in which the cassette is automatically unloaded or loaded with film. Field defining masks are also mounted for translating selectively with the carriage. The masks are formed of the synthetic materials having minimal X-ray absorption and high rigidity, without an aperture, to define a sharp X-ray field.

REFERENCES:
patent: 3862426 (1975-01-01), Thomas
patent: 3944838 (1976-03-01), Gade
patent: 4146793 (1979-03-01), Bergstrom et al.
patent: 4214167 (1980-07-01), Gade
patent: 4266139 (1981-05-01), Sportelli et al.

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