X-ray or gamma ray systems or devices – Auxiliary data acquisition or recording
Patent
1988-08-25
1990-08-28
Fields, Carolyn E.
X-ray or gamma ray systems or devices
Auxiliary data acquisition or recording
378165, G03B 4202
Patent
active
049531930
ABSTRACT:
A fail-safe X-ray film marking system that includes a reusable fastening combination adapted for use in temporarily fastening a marking element to a container that is configured for holding X-ray film. The marking element is at least partially opaque to X-rays, and it is adapted to be positioned on the cassette in such a way that an image of an identifying character of the marking element will be imprinted on the X-ray film (inside the container) after it is exposed to radiation. The fastening combination is formed from X-ray permeable material that will not degrade the quality of an image produced on the subsequently exposed X-ray film; a suitable material for the combination is nylon.
The fastening combination preferably includes a relatively large sheet having a pile-like surface comprising a multitude of small, short loops of the kind that can be engaged by a multitude of resilient hooks of the Velcro type. The sheet also has an adhesive mounting surface that is adapted to be securely affixed to the top face of the container in a manner that clearly defines at least a portion of the periphery of a sheet of X-ray film concealed inside the container. Ideally, the size of the large sheet is sufficient to cover at least most of the top face of the container in such a way as to completely and positively define the entire periphery of the sheet of X-ray film. Affixed to the bottom of the marking element is a plurality of resilient hooks that are cooperable with the loops of the sheet for effecting a temporary union therewith. With this fastening combination, any one of a variety of marking elements may be positioned so that it will overlie any desired portion of the X-ray film. This fail-safe marking system ensures that when the marking element is placed within the boundaries of the large sheet, an image of its identifying character will be imprinted in its entirety on the subsequently exposed X-ray film.
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Fields Carolyn E.
McHugh Charles W.
Porta David P.
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