Energy weighted x-ray dark-field imaging

The dark-field image obtained in grating-based x-ray phase-contrast imaging can provide information about the objects' microstructures on a scale smaller than the pixel size even with low geometric magnification. In this publication we demonstrate that the dark-field image quality can be enhanc...

Descripción completa

Detalles Bibliográficos
Autores principales: Pelzer, Georg, Zang, Andrea, Anton, Gisela, Bayer, Florian, Horn, Florian, Kraus, Manuel, Rieger, Jens, Ritter, Andre, Wandner, Johannes, Weber, Thomas, Fauler, Alex, Fiederle, Michael, Wong, Winnie S, Campbell, Michael, Meiser, Jan, Meyer, Pascal, Mohr, Jürgen, Michel, Thilo
Lenguaje:eng
Publicado: 2014
Materias:
XX
Acceso en línea:https://dx.doi.org/10.1364/OE.22.024507
http://cds.cern.ch/record/2120670
_version_ 1780949333748744192
author Pelzer, Georg
Zang, Andrea
Anton, Gisela
Bayer, Florian
Horn, Florian
Kraus, Manuel
Rieger, Jens
Ritter, Andre
Wandner, Johannes
Weber, Thomas
Fauler, Alex
Fiederle, Michael
Wong, Winnie S
Campbell, Michael
Meiser, Jan
Meyer, Pascal
Mohr, Jürgen
Michel, Thilo
author_facet Pelzer, Georg
Zang, Andrea
Anton, Gisela
Bayer, Florian
Horn, Florian
Kraus, Manuel
Rieger, Jens
Ritter, Andre
Wandner, Johannes
Weber, Thomas
Fauler, Alex
Fiederle, Michael
Wong, Winnie S
Campbell, Michael
Meiser, Jan
Meyer, Pascal
Mohr, Jürgen
Michel, Thilo
author_sort Pelzer, Georg
collection CERN
description The dark-field image obtained in grating-based x-ray phase-contrast imaging can provide information about the objects' microstructures on a scale smaller than the pixel size even with low geometric magnification. In this publication we demonstrate that the dark-field image quality can be enhanced with an energy-resolving pixel detector. Energy-resolved x-ray dark-field images were acquired with a 16-energy-channel photon-counting pixel detector with a 1 mm thick CdTe sensor in a Talbot-Lau x-ray interferometer. A method for contrast-noise-ratio (CNR) enhancement is proposed and validated experimentally. In measurements, a CNR improvement by a factor of 1.14 was obtained. This is equivalent to a possible radiation dose reduction of 23%.
id cern-2120670
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2014
record_format invenio
spelling cern-21206702019-09-30T06:29:59Zdoi:10.1364/OE.22.024507http://cds.cern.ch/record/2120670engPelzer, GeorgZang, AndreaAnton, GiselaBayer, FlorianHorn, FlorianKraus, ManuelRieger, JensRitter, AndreWandner, JohannesWeber, ThomasFauler, AlexFiederle, MichaelWong, Winnie SCampbell, MichaelMeiser, JanMeyer, PascalMohr, JürgenMichel, ThiloEnergy weighted x-ray dark-field imagingXXThe dark-field image obtained in grating-based x-ray phase-contrast imaging can provide information about the objects' microstructures on a scale smaller than the pixel size even with low geometric magnification. In this publication we demonstrate that the dark-field image quality can be enhanced with an energy-resolving pixel detector. Energy-resolved x-ray dark-field images were acquired with a 16-energy-channel photon-counting pixel detector with a 1 mm thick CdTe sensor in a Talbot-Lau x-ray interferometer. A method for contrast-noise-ratio (CNR) enhancement is proposed and validated experimentally. In measurements, a CNR improvement by a factor of 1.14 was obtained. This is equivalent to a possible radiation dose reduction of 23%.oai:cds.cern.ch:21206702014
spellingShingle XX
Pelzer, Georg
Zang, Andrea
Anton, Gisela
Bayer, Florian
Horn, Florian
Kraus, Manuel
Rieger, Jens
Ritter, Andre
Wandner, Johannes
Weber, Thomas
Fauler, Alex
Fiederle, Michael
Wong, Winnie S
Campbell, Michael
Meiser, Jan
Meyer, Pascal
Mohr, Jürgen
Michel, Thilo
Energy weighted x-ray dark-field imaging
title Energy weighted x-ray dark-field imaging
title_full Energy weighted x-ray dark-field imaging
title_fullStr Energy weighted x-ray dark-field imaging
title_full_unstemmed Energy weighted x-ray dark-field imaging
title_short Energy weighted x-ray dark-field imaging
title_sort energy weighted x-ray dark-field imaging
topic XX
url https://dx.doi.org/10.1364/OE.22.024507
http://cds.cern.ch/record/2120670
work_keys_str_mv AT pelzergeorg energyweightedxraydarkfieldimaging
AT zangandrea energyweightedxraydarkfieldimaging
AT antongisela energyweightedxraydarkfieldimaging
AT bayerflorian energyweightedxraydarkfieldimaging
AT hornflorian energyweightedxraydarkfieldimaging
AT krausmanuel energyweightedxraydarkfieldimaging
AT riegerjens energyweightedxraydarkfieldimaging
AT ritterandre energyweightedxraydarkfieldimaging
AT wandnerjohannes energyweightedxraydarkfieldimaging
AT weberthomas energyweightedxraydarkfieldimaging
AT fauleralex energyweightedxraydarkfieldimaging
AT fiederlemichael energyweightedxraydarkfieldimaging
AT wongwinnies energyweightedxraydarkfieldimaging
AT campbellmichael energyweightedxraydarkfieldimaging
AT meiserjan energyweightedxraydarkfieldimaging
AT meyerpascal energyweightedxraydarkfieldimaging
AT mohrjurgen energyweightedxraydarkfieldimaging
AT michelthilo energyweightedxraydarkfieldimaging

Ejemplares similares