𝔖 Bobbio Scriptorium
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X-ray fluorescence and X-ray transmission microtomography imaging system

✍ Scribed by Gabriela R. Pereira; Henrique S. Rocha; Marcelino J. Anjos; Paulo Faria; Carlos A. Pérez; Ricardo T. Lopes

Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
589 KB
Volume
581
Category
Article
ISSN
0168-9002

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✦ Synopsis

An X-ray Transmission Microtomography (CT) system combined with an X-ray Fluorescence Microtomography (XRFCT) system was implemented in the Brazilian Synchrotron Light Source (LNLS), Campinas, Brazil. The main aim of this work is to determine the elemental and absorption distribution map in breast tissue samples. The experiments were performed at the X-Ray Fluorescence beamline (D09B-XRF) of the Brazilian Synchrotron Light Source (LNLS), Campinas, Brazil. A quasi-monochromatic beam produced by a multilayer monochromator was used as an incident beam. The fluorescence photons were acquired with an energy dispersive HPGe detector (CANBERRA Industries Inc.) placed at 90 to the incident beam, while transmitted photons were detected with a fast Na(Tl) scintillation counter (CYBERSTAR Oxford Danfysik) placed behind the sample in the beam direction. All the tomographic images were reconstructed using a filtered-back projection algorithm.

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