Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Simulation of multispectral x-ray imaging scenarios by Wien shift optical spectroscopy

Brydegaard, Mikkel LU and Svanberg, Sune LU (2010) In American Journal of Physics 78(2). p.170-175
Abstract
The acquisition of multispectral x-ray images and the treatment of such data are essential for understanding many devices that we encounter in everyday life. Examples include computerized tomography in hospitals and scanners at airports. X-ray devices remain impractical for undergraduate laboratories because of their considerable cost and the risk of exposure to ionizing radiation. One way to acquire spectral information and thus constituent-discriminating data in x-ray imaging is to alter the spectral contents of the illuminating x-ray source, which can be achieved by changing the x-ray tube voltage and thus energetically displacing the bremsstrahlung. A similar effect occurs in the emission from a black-body radiator in the optical and... (More)
The acquisition of multispectral x-ray images and the treatment of such data are essential for understanding many devices that we encounter in everyday life. Examples include computerized tomography in hospitals and scanners at airports. X-ray devices remain impractical for undergraduate laboratories because of their considerable cost and the risk of exposure to ionizing radiation. One way to acquire spectral information and thus constituent-discriminating data in x-ray imaging is to alter the spectral contents of the illuminating x-ray source, which can be achieved by changing the x-ray tube voltage and thus energetically displacing the bremsstrahlung. A similar effect occurs in the emission from a black-body radiator in the optical and infrared regions when altering the temperature. We illustrate how to simulate the x-ray scenario with a webcam and an ordinary light bulb. Insight into how chemical and physical information regarding objects can be obtained in multispectral imaging supported by multivariate analysis is gained. (Less)
Please use this url to cite or link to this publication:
author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
physics education, Wien effect, X-ray spectra, X-ray imaging, computerised tomography, laboratories, SoTL
categories
Higher Education
in
American Journal of Physics
volume
78
issue
2
pages
170 - 175
publisher
American Association of Physics Teachers
external identifiers
  • wos:000273597200008
  • scopus:74249114808
ISSN
0002-9505
DOI
10.1119/1.3248356
language
English
LU publication?
yes
id
d53346e8-03bb-4e33-83bf-a158773dc6b3 (old id 1547712)
date added to LUP
2016-04-01 13:34:09
date last changed
2022-01-27 19:53:03
@article{d53346e8-03bb-4e33-83bf-a158773dc6b3,
  abstract     = {{The acquisition of multispectral x-ray images and the treatment of such data are essential for understanding many devices that we encounter in everyday life. Examples include computerized tomography in hospitals and scanners at airports. X-ray devices remain impractical for undergraduate laboratories because of their considerable cost and the risk of exposure to ionizing radiation. One way to acquire spectral information and thus constituent-discriminating data in x-ray imaging is to alter the spectral contents of the illuminating x-ray source, which can be achieved by changing the x-ray tube voltage and thus energetically displacing the bremsstrahlung. A similar effect occurs in the emission from a black-body radiator in the optical and infrared regions when altering the temperature. We illustrate how to simulate the x-ray scenario with a webcam and an ordinary light bulb. Insight into how chemical and physical information regarding objects can be obtained in multispectral imaging supported by multivariate analysis is gained.}},
  author       = {{Brydegaard, Mikkel and Svanberg, Sune}},
  issn         = {{0002-9505}},
  keywords     = {{physics education; Wien effect; X-ray spectra; X-ray imaging; computerised tomography; laboratories; SoTL}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{170--175}},
  publisher    = {{American Association of Physics Teachers}},
  series       = {{American Journal of Physics}},
  title        = {{Simulation of multispectral x-ray imaging scenarios by Wien shift optical spectroscopy}},
  url          = {{http://dx.doi.org/10.1119/1.3248356}},
  doi          = {{10.1119/1.3248356}},
  volume       = {{78}},
  year         = {{2010}},
}