Chest-screening frame, London, England, 1927-1930
Fluoroscopic chest-screening frame (without x-ray tube) by GRSA Co. Ltd., 204-6 Gt. Portland Street, London, W1, late 1920s
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Glossary: diagnostic tool
Any range of medical instruments used to diagnose illness.
A wave of electromagnetic radiation that has high energy and short wavelength. It is able to pass through many materials, except those of high density such as metals or bones. Discovered in 1895 by William Roentgen.
An X-ray device equipped with a fluorescent screen on which a patient's insides can be viewed in real time. The patient is constantly exposed to a low X-ray radiation, in contrast to a normal X-ray machine which uses a short burst of a higher level of radiation.
Glossary: x-ray screening unit