Computed tomography with monochromatic bremsstrahlung radiation

Computed tomography with monochromatic bremsstrahlung radiation

The use of filters with appropriate thickness of different elements produces a method to quasi-monochromatize X-ray beams. In the present study the filters were produced in a boric acid matrix, using the elements Mo, Sb, Cs, Ce and Gd. The thickness of the filters varied from 50 to 300 μm for a high...

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Bibliographic Details
Published in:Applied radiation and isotopes Vol. 53; no. 4; pp. 665 - 671
Main Authors: Lopes, R.T, Costa, E.B, de Jesus, E.F.O
Format: Journal Article
Language:English
Published: England Elsevier Ltd 01-10-2000
Subjects:
Bremsstrahlung radiation
Computed tomography
Monoenergetic radiation
Computed tomography
Monoenergetic radiation
Bremsstrahlung radiation
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Summary:The use of filters with appropriate thickness of different elements produces a method to quasi-monochromatize X-ray beams. In the present study the filters were produced in a boric acid matrix, using the elements Mo, Sb, Cs, Ce and Gd. The thickness of the filters varied from 50 to 300 μm for a high voltage tube operating from 30 to 70 kVp. The parameters analyzed were the beam resolution, measured by its FWHM as a function of filter thickness, and the reduction of beam intensity. The results show a comparison between conventional tomographies obtained with different filters and application in the technique of differential tomography, with double energy for identification of elements such as Zr, Nd, Ba and Sm.
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ISSN:0969-8043
1872-9800
DOI:10.1016/S0969-8043(00)00202-5