Xeroradiography is a type of x-ray(vision) 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. The process was developed by engineer Dr. Robert C. McMaster in 1950.
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.
- "Scorotron". Medcyclopaedia. GE.
- "Robert C. McMaster — a personal remembrance". NDT International. 19: 356. doi:10.1016/0308-9126(86)90020-9.
- Xeromammography at the US National Library of Medicine Medical Subject Headings (MeSH)
- Xeroradiography entry in the public domain NCI Dictionary of Cancer Terms
|This medical diagnostic article is a stub. You can help Wikipedia by expanding it.|