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Generation of X-rays For Medical Imaging By High-power Lasers - Preliminary-results

Herrlin, K; Svahn, G; Olsson, C; Pettersson, H; Tillman, C; Persson, Anders LU ; Wahlström, Claes-Göran LU and Svanberg, Sune LU (1993) In Radiology 189(1). p.65-68
Abstract
PURPOSE: To evaluate the use of x-ray imaging performed with a high-power laser system in biologic and medical studies. MATERIALS AND METHODS: A compact terawatt laser system based on chirped pulse amplification in titanium-doped sapphire was used. X rays were generated by irradiating a high-atomic-number target (tantalum). RESULTS: When photons with an energy below 10 keV were removed with use of 3 mm of aluminum, the half-value layer in aluminum for the remaining x rays was approximately 10 mm. The x-ray source allowed performance of biologic magnification radiography. Star-pattern tests indicated an equivalent focal spot size of less than 60 mum. Exposures of a single pulse could be obtained. The duration of a single x-ray pulse was... (More)
PURPOSE: To evaluate the use of x-ray imaging performed with a high-power laser system in biologic and medical studies. MATERIALS AND METHODS: A compact terawatt laser system based on chirped pulse amplification in titanium-doped sapphire was used. X rays were generated by irradiating a high-atomic-number target (tantalum). RESULTS: When photons with an energy below 10 keV were removed with use of 3 mm of aluminum, the half-value layer in aluminum for the remaining x rays was approximately 10 mm. The x-ray source allowed performance of biologic magnification radiography. Star-pattern tests indicated an equivalent focal spot size of less than 60 mum. Exposures of a single pulse could be obtained. The duration of a single x-ray pulse was estimated to be of the order of picoseconds. CONCLUSION. With use of subpicosecond laser pulses, x-ray generation can occur with a smaller equivalent focal spot size than with conventional x-ray sources. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Radiology
volume
189
issue
1
pages
65 - 68
publisher
Radiological Society of North America
external identifiers
  • Scopus:0027446636
ISSN
1527-1315
language
English
LU publication?
yes
id
157e120f-2836-4931-bc4a-04a11c653289 (old id 2258332)
alternative location
http://radiology.rsna.org/content/189/1/65.short
date added to LUP
2012-02-27 17:41:40
date last changed
2016-10-13 04:27:53
@misc{157e120f-2836-4931-bc4a-04a11c653289,
  abstract     = {PURPOSE: To evaluate the use of x-ray imaging performed with a high-power laser system in biologic and medical studies. MATERIALS AND METHODS: A compact terawatt laser system based on chirped pulse amplification in titanium-doped sapphire was used. X rays were generated by irradiating a high-atomic-number target (tantalum). RESULTS: When photons with an energy below 10 keV were removed with use of 3 mm of aluminum, the half-value layer in aluminum for the remaining x rays was approximately 10 mm. The x-ray source allowed performance of biologic magnification radiography. Star-pattern tests indicated an equivalent focal spot size of less than 60 mum. Exposures of a single pulse could be obtained. The duration of a single x-ray pulse was estimated to be of the order of picoseconds. CONCLUSION. With use of subpicosecond laser pulses, x-ray generation can occur with a smaller equivalent focal spot size than with conventional x-ray sources.},
  author       = {Herrlin, K and Svahn, G and Olsson, C and Pettersson, H and Tillman, C and Persson, Anders and Wahlström, Claes-Göran and Svanberg, Sune},
  issn         = {1527-1315},
  language     = {eng},
  number       = {1},
  pages        = {65--68},
  publisher    = {ARRAY(0xb56a140)},
  series       = {Radiology},
  title        = {Generation of X-rays For Medical Imaging By High-power Lasers - Preliminary-results},
  volume       = {189},
  year         = {1993},
}