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Xeroradiography is a type of X-ray imaging in which a picture of the body is recorded on paper rather than on film. In this technique, a plate of selenium, which rests on a thin layer of aluminium oxide, is charged uniformly by passing it in front of a scorotron.[1] The process was developed by engineer Dr. Robert C. McMaster in 1950.[2]

Xeroradiography
Medical diagnostics
MeSH D014986

As X-ray photon impinges on this amorphous coat of selenium, charges diffuse out, in proportion to energy content of the X-ray. This occurs as a result of photoconduction. The resulting imprint, in the form of charge distribution on the plate, attracts toner particles, which is then transferred to reusable paper plates. In contrast to conventional X-rays, photographic developers are not needed. Hence the term xeroradiography; 'xero' meaning dry in Greek. It requires more radiation exposure. Historically used in mammography prior to the advent of digital mammography.

Xeromammography is a form of xeroradiography.[3]

ReferencesEdit

  1. ^ "Scorotron". Medcyclopaedia. GE.
  2. ^ "Robert C. McMaster — a personal remembrance". NDT International. 19: 356. doi:10.1016/0308-9126(86)90020-9.
  3. ^ Xeromammography at the US National Library of Medicine Medical Subject Headings (MeSH)

External linksEdit

  This article incorporates public domain material from the U.S. National Cancer Institute document "Dictionary of Cancer Terms".

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