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.
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 developer
In the processing of photographic films, plates or papers, the photographic developer (or just developer) is one or more chemicals that convert the latent image to a visible image. Developing agents achieve this conversion by reducing the silve ...
s 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.
References
External links
Xeroradiographyentry in the public domain NCI Dictionary of Cancer Terms
External links
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Radiography
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