Speaker
Gabriela Ribeiro Pereira
(Nucl. Instrum. Lab., Rio de Janeiro)
Description
An X-ray Transmission Microtomography (CT) system combined with an Xray
Fluorescence Microtomography (XRFCT) system was implemented in the
Brazilian Synchrotron Light Source (LNLS), Campinas, Brazil. The main 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 collected with an energy dispersive HPGe
detector (CANBERRA Industries inc.) placed at 90 o to the incident beam,
while transmitted photons were detected with a fast Na(Tl) scintillation
counter (CYBERSTAR-Oxford anfysik) placed behind the sample on the beam
direction. All the tomographic images were reconstructed using a filtered-
back projection algorithm.
Author
Gabriela Ribeiro Pereira
(Nucl. Instrum. Lab., Rio de Janeiro)
