My attention has been directed to the article by Belisario and Pugh, "Threshold Erythema Dose of Roentgen Rays," in the March 1942 number of this journal. It has been suggested that from the report on the methods used for physical determination of dosage of roentgen rays in different countries an incorrect impression may be gained regarding conditions then operating in Australia. This may be due partly to the fact that a considerable delay ensued between the collection of the data and the publication of the paper and partly to the fact that in general facilities for calibration of x-ray equipment are utilized somewhat earlier by radiotherapeutists than by dermatologists. For these reasons a brief survey of the facilities available in Australia for such calibration may be of interest.
At the Third Australian Cancer Conference, in 1932, the position regarding the standardization of roentgen dosemeters1 was
EDDY CE. CALIBRATION OF X-RAY EQUIPMENT FOR SUPERFICIAL THERAPY. Arch Derm Syphilol. 1944;49(4):250–252. doi:10.1001/archderm.1944.01510100026007
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