Laser-based intense hard x-ray source for mammography

Liming M. Chen; Patrick Forget; R. Toth; Jean-Claude Kieffer; Andrzej Krol; Charles C. Chamberlain; B. X. Hou; John A. Nees; Gerard A. Mourou

doi:10.1117/12.480178

5 June 2003 Laser-based intense hard x-ray source for mammography

Liming M. Chen, Patrick Forget, R. Toth, Jean-Claude Kieffer, Andrzej Krol, Charles C. Chamberlain, B. X. Hou, John A. Nees, Gerard A. Mourou

Author Affiliations +

Proceedings Volume 5030, Medical Imaging 2003: Physics of Medical Imaging; (2003) https://doi.org/10.1117/12.480178
Event: Medical Imaging 2003, 2003, San Diego, California, United States

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.

Citation Download Citation

Liming M. Chen, Patrick Forget, R. Toth, Jean-Claude Kieffer, Andrzej Krol, Charles C. Chamberlain, B. X. Hou, John A. Nees, and Gerard A. Mourou "Laser-based intense hard x-ray source for mammography", Proc. SPIE 5030, Medical Imaging 2003: Physics of Medical Imaging, (5 June 2003); https://doi.org/10.1117/12.480178

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