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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
; ; ; ; ; ; and
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
2016-04-04 09:17:53
date last changed
2021-09-26 03:30:05
@article{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    = {{Radiological Society of North America}},
  series       = {{Radiology}},
  title        = {{Generation of X-rays For Medical Imaging By High-power Lasers - Preliminary-results}},
  url          = {{http://radiology.rsna.org/content/189/1/65.short}},
  volume       = {{189}},
  year         = {{1993}},
}