Radiant energy – Luminophor irradiation
Patent
1975-04-09
1976-09-07
Smith, Alfred E.
Radiant energy
Luminophor irradiation
250456, G01N 2100, G01N 2300, H01J 3720
Patent
active
039795950
ABSTRACT:
A frame which holds the legs, knees, and x-ray film cassette in proper alignment to one another would allow an accurate, easily reproducible, and comfortable technique for obtaining an improved axial x-ray view of the kneecaps and patellofemoral joints. (Axial views are those obtained when the x-ray beam is projected in line with the limb, rather than perpendicular to it.)
Heretofore all other techniques to x-ray the knees in axial projection have had significant deficiencies singly or in combination: distortion of the x-ray image, discomfort for the patient with an acutely injured knee, complicated technology applicable to research but not clinical practice, obsolescence due to the larger present-day x-ray tubes and collimators, and improper positioning which masks abnormalities actually present. This frame was developed to allow a technique which avoids these deficiencies. This method has never been described before in the medical literature.
For ease of use it is collapsible, adjustable, and lightweight and can be made from any suitable materials.
REFERENCES:
patent: 3452977 (1969-07-01), Ryman
patent: 3648305 (1972-03-01), Ersek
Grigsby T. N.
Smith Alfred E.
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