Aluminum Filter
Historical document, translated for reference. It reflects medical knowledge of the 1920s–30s and is not medical advice.
Summary
The aluminum filter was introduced into radiotherapy in 1908 by Guilleminot. With atomic number 13, aluminum has characteristic absorption in the long-wave part of the X-ray spectrum and is used to absorb soft rays that particularly damage the skin.
Encyclopedia entry (1928–1936)
Aluminum Filter, introduced into radiotherapy in 1908 by Guilleminot. Having atomic number 13, Al has characteristic absorption lying in the long-wave part of the X-ray spectrum, and therefore is used to absorb those soft rays which particularly damage the skin. In superficial radiotherapy, a filter 0.5-1 mm thick is used, in medium therapy 3-4 mm thick. In deep radiotherapy it is used to absorb the soft characteristic rays emitted by a Cu or Zn filter, and therefore is placed under them. In electron tubes in X-ray diagnostics, an Al. filter 0.5 mm thick is also used.
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Cite this page
“Aluminum Filter.” Soviet Medical Encyclopedia. English translation of Bolshaya Meditsinskaya Entsiklopediya, 1st ed. (Moscow, 1928–1936), ed. N. A. Semashko. https://sovietmedicalencyclopedia.pages.dev/article/aluminum-filter/