X-ray or gamma ray systems or devices – Photographic detector support – Dental
Patent
1981-06-29
1983-07-19
Smith, Alfred E.
X-ray or gamma ray systems or devices
Photographic detector support
Dental
378164, 430396, 430967, G03B 4116, G03C 516
Patent
active
043947700
ABSTRACT:
An X-ray package for X-raying an object such as a portion of a human body includes a film which has been pre-exposed to dimensional indicia so that, after the package has been exposed to X-radiation relative to the object and the film has been developed, the image on the film includes both the object and the dimensional indicia. The package is made by unwinding a roll of pre-exposed film while simultaneously unwinding rolls of cover materials to form a composite strip of film and cover materials and forming X-ray packages successively from the end of the composite strip. The film is pre-exposed by unwinding a roll of unexposed film while simultaneously unwinding a control strip and the control strip causes the film to advance in steps of precisely equal lengths. Between each advance of the strips, a portion of the strip of film is exposed to dimensional indicia.
REFERENCES:
patent: 2614225 (1952-10-01), Shapiro
patent: 3514606 (1970-05-01), Rabey
patent: 3848136 (1974-11-01), Seldin
Fixott, H. C. et al., "Use of a Grid in the Diagnosis of Oral Roentgenograms", Jour. of American Dental Association, vol. 78, No. 1, Jan. 1969, pp. 122-123.
Grigsby T. N.
Smith Alfred E.
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