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IV. Factors Influencing Ovary Dose

VICTOR H. WITTEN, MD; HENRY LEE, BS

Arch Dermatol. 1963;87(5):591-600.

Abstract
A study was made of the various parameters which might influence ovary dose during conventional dermatologic x-ray therapy. These parameters included x-ray quality, tube current (ma), beam collimation and field size, shielding, angle of the x-ray beam in relation to the ovaries, and proximity of treatment site to the ovaries.

Ovarian dose was measured during irradiation of the face, upper chest, and back of a specially constructed pressed wood phantom using each of the parameters alone and then in various combinations. The results are presented in tables and graphs.

Because of the many body skin sites which may require therapy, it is impractical to outline the individual precautionary measures which must be taken for each exposure. The principles involved are demonstrated by the results of the various parameters which were studied. In order to minimize ovary dose during dermatologic x-ray therapy, one should utilize lower tube kilovoltage, softer radiation, appropriate collimation, effective shielding minimizing area of field irradiated with no added filtration, increased distance between the x-ray beam axis and the ovaries and angling on the x-ray tube away from the ovaries.

The gonad dose can best be reduced by exerting all of these simple and inexpensive means every time dermatologic radiation is administered. Such precautions will greatly reduce the hazards of error and damage through the use of x-radiation.

Author Affiliations
NEW YORK

From the Department of Dermatology of the New York University Schools of Medicine and the Skin and Cancer Unit of the New York University Hospital, New York.

Footnotes
This study was supported by grants from Contract RH 00258 between New York University and the Division of Radiological Health, Bureau of State Services, Public Health Service.

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