Since May, 1951, the members of the University of Michigan Department of Dermatology have worn lapel photographic film badge dosimeters as part of an extensive monitoring program covering all University personnel who are in contact with radioactive materials and other sources of radiation. This report covers exposures to members of only the Department of Dermatology. Radium therapy or other means of radiation therapy, with the exception of x-ray itself, is not employed by members of the Department. The x-ray machines which were the source of these exposures were operated in the energy range of 94 to 100 kv.
Measurement of x-ray dosage by photographic means depends on the establishment of a one-to-one relationship between the x-ray dose and photographic effect. Since a roentgen is the measure of radiation energy absorbed in air, and the photographic effect is the result of ionization of the silver halide in the photographic
JANSEN GT, CURTIS AC. X-Ray Exposure in Dermatology Personnel. AMA Arch Derm. 1956;73(1):66–68. doi:10.1001/archderm.1956.01550010068007
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