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Proceedings Paper

Laser-based intense hard x-ray source for mammography
Author(s): Liming M. Chen; Patrick Forget; R. Toth; Jean-Claude Kieffer; Andrzej Krol; Charles C. Chamberlain; B. X. Hou; John A. Nees; Gerard A. Mourou
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Paper Abstract

Characteristic Kα emissions from Mo, Ag and La targets irradiated by 60 fs, 600 mJ, 10 Hz Ti: Sapphire laser pulse at 1017 W/cm2 - 1019 W/cm2 can be potentially used in x-ray mammography. We have investigated x-ray spectra created by this novel x-ray source in this context. All the obtained spectra exhibited a dominating narrow emission lines with only a small portion of x-ray emission in Bremsstrahlung. Such spectra might be very usful in mammography and might improve contrast and dose utilizaion, as compared to a conventional mammographic x-ray tube. The effective focal spot size was of the order of 50 μm, i.e. significantly smaller than in conventional mammography. In contradiction to conventional mammography the effective x-ray focal spot size and the effective dose remained constant across the field of view. Kα conversion efficiency, from laser light to x-rays, was optimized and values as high as 2 x 10-5 have been obtained.

Paper Details

Date Published: 5 June 2003
PDF: 6 pages
Proc. SPIE 5030, Medical Imaging 2003: Physics of Medical Imaging, (5 June 2003); doi: 10.1117/12.480178
Show Author Affiliations
Liming M. Chen, INRS-Energie, Materiaux et Telecommunication (Canada)
Patrick Forget, INRS-Energie, Materiaux et Telecommunication (Canada)
R. Toth, INRS-Energie, Materiaux et Telecommunication (Canada)
Jean-Claude Kieffer, INRS-Energie, Materiaux et Telecommunication (Canada)
Andrzej Krol, SUNY Upstate Medical Univ. (United States)
Charles C. Chamberlain, SUNY Upstate Medical Univ. (United States)
B. X. Hou, Univ. of Michigan (United States)
John A. Nees, Univ. of Michigan (United States)
Gerard A. Mourou, Univ. of Michigan (United States)

Published in SPIE Proceedings Vol. 5030:
Medical Imaging 2003: Physics of Medical Imaging
Martin J. Yaffe; Larry E. Antonuk, Editor(s)

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