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X-Radiographic techniques and applications

Published online by Cambridge University Press:  26 July 2017

Rainer Zangerl  and
Hans-Peter Schultze
Rainer Zangerl
Affiliation:
Field Museum of Natural History, Chicago, Illinois 60605
Hans-Peter Schultze
Affiliation:
Museum of Natural History, University of Kansas, Lawrence, Kansas 66045
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Extract

There are at present two techniques that use X-rays to show internal structures, both are in common use in medicine. The first technique is essentially a photographic method (for extensive description see Quinn and Sigl, 1980). The second (Cat scan or Computer Tomography) computes a section from many pictures taken by a thin, fan shaped X-ray beam. X-rays are a form of electromagnetic radiation with a wave length 10,000 times smaller, and energy 10,000 times greater, than visible light. They are generated in a high-vacuum tube where electrons are produced by a heated cathode and are shot at high electromotive force (30 to over 100 kilovolts) at the anode where most of the energy is converted to heat; only a small fraction is given off as X-radiation.

Type
Internal Anatomy and Microstructure
Information
The Paleontological Society Special Publications , Volume 4: Paleotechniques , 1989 , pp. 165 - 178
Copyright
Copyright © 1989 Paleontological Society 

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