Generation of X-rays For Medical Imaging By High-power Lasers - Preliminary-results
(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)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2258332
- author
- Herrlin, K ; Svahn, G ; Olsson, C ; Pettersson, H ; Tillman, C ; Persson, Anders LU ; Wahlström, Claes-Göran LU and Svanberg, Sune LU
- organization
- publishing date
- 1993
- 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}}, }