The Emergence of an Industry

  • Pierre-Yves Donzé


X-ray device technology first appeared during the second part of the 1890s, following Wilhelm Roentgen’s discovery of X-rays in 1895. The technology’s application to medicine was not immediate, however: until the development of a new generation of X-ray tubes, the most famous being the Coolidge tube that General Electric (GE) patented in the United States in 1913, radiology devices were not precise enough to be useful tools for medical doctors, particularly in diagnostic usage. The technical characteristics of the Coolidge tube (tungsten filament and vacuum) made it possible to exercise meticulous control over dosage and ray intensity.

Copyright information

© The Author(s) 2018

Authors and Affiliations

  1. 1.Osaka UniversityToyonakaJapan

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