Radiograph marker

Details Radiograph marker Radiograph marker

1975-12-22

1977-11-15

Smith, Alfred E.

Radiant energy

Invisible radiation responsive nonelectric signalling

Photographic type

354105, G03B 4116

Patent

active

040587339

ABSTRACT:
A marker for use in recording on a radiograph either of two different characters or symbols, for example an "L" or an "R" corresponding to a "left" or "right" exposure area, and for indicating the orientation of the patient during exposure. A movable element cooperates with a body member to selectively form either of the two characters or symbols. The body member also houses an orientation indicating system which provides a recordable indication of whether the marker, and hence the area of the patient exposed to the X-rays, was horizontal or vertical at the time of exposure.

REFERENCES:
patent: 2024874 (1935-12-01), Prosperi
patent: 3600577 (1971-08-01), Lovison

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