Simulation of multispectral x-ray imaging scenarios by Wien shift optical spectroscopy
(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:
https://lup.lub.lu.se/record/1547712
- author
- Brydegaard, Mikkel LU and Svanberg, Sune LU
- organization
- publishing date
- 2010
- 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}},
}