Design of Acquisition Schemes and Setup Geometry for Anisotropic X-ray Dark-Field Tomography (AXDT)

Abstract Anisotropic X-ray Dark-field Tomography (AXDT) is a new imaging technique for reconstructing the three-dimensional scattering profile within a sample using the dark-field signal measured in an X-ray grating interferometry setup. As in any tomographic measurement, the acquisition geometry pl...

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Autores principales:	Y. Sharma, F. Schaff, M. Wieczorek, F. Pfeiffer, T. Lasser
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/40d5c5b6519c434682994f854fa1112b
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spelling	oai:doaj.org-article:40d5c5b6519c434682994f854fa1112b2021-12-02T11:40:58ZDesign of Acquisition Schemes and Setup Geometry for Anisotropic X-ray Dark-Field Tomography (AXDT)10.1038/s41598-017-03329-02045-2322https://doaj.org/article/40d5c5b6519c434682994f854fa1112b2017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-03329-0https://doaj.org/toc/2045-2322Abstract Anisotropic X-ray Dark-field Tomography (AXDT) is a new imaging technique for reconstructing the three-dimensional scattering profile within a sample using the dark-field signal measured in an X-ray grating interferometry setup. As in any tomographic measurement, the acquisition geometry plays a key role in the accurate reconstruction of the scattering information. More- over, the anisotropic nature of the dark-field signal poses additional challenges for designing the acquisition protocols. In this work, we present an efficient approach to measure scattering orientations spread over the unit sphere and prove its efficacy using the knowledge from conventional tomography. In addition, we conclude (using analytical and experimental results) that placing the gratings such that the grating bars make an angle of 45 degrees with respect to the vertical direction is the optimal setup configuration for AXDT.Y. SharmaF. SchaffM. WieczorekF. PfeifferT. LasserNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Y. Sharma F. Schaff M. Wieczorek F. Pfeiffer T. Lasser Design of Acquisition Schemes and Setup Geometry for Anisotropic X-ray Dark-Field Tomography (AXDT)
description	Abstract Anisotropic X-ray Dark-field Tomography (AXDT) is a new imaging technique for reconstructing the three-dimensional scattering profile within a sample using the dark-field signal measured in an X-ray grating interferometry setup. As in any tomographic measurement, the acquisition geometry plays a key role in the accurate reconstruction of the scattering information. More- over, the anisotropic nature of the dark-field signal poses additional challenges for designing the acquisition protocols. In this work, we present an efficient approach to measure scattering orientations spread over the unit sphere and prove its efficacy using the knowledge from conventional tomography. In addition, we conclude (using analytical and experimental results) that placing the gratings such that the grating bars make an angle of 45 degrees with respect to the vertical direction is the optimal setup configuration for AXDT.
format	article
author	Y. Sharma F. Schaff M. Wieczorek F. Pfeiffer T. Lasser
author_facet	Y. Sharma F. Schaff M. Wieczorek F. Pfeiffer T. Lasser
author_sort	Y. Sharma
title	Design of Acquisition Schemes and Setup Geometry for Anisotropic X-ray Dark-Field Tomography (AXDT)
title_short	Design of Acquisition Schemes and Setup Geometry for Anisotropic X-ray Dark-Field Tomography (AXDT)
title_full	Design of Acquisition Schemes and Setup Geometry for Anisotropic X-ray Dark-Field Tomography (AXDT)
title_fullStr	Design of Acquisition Schemes and Setup Geometry for Anisotropic X-ray Dark-Field Tomography (AXDT)
title_full_unstemmed	Design of Acquisition Schemes and Setup Geometry for Anisotropic X-ray Dark-Field Tomography (AXDT)
title_sort	design of acquisition schemes and setup geometry for anisotropic x-ray dark-field tomography (axdt)
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/40d5c5b6519c434682994f854fa1112b
work_keys_str_mv	AT ysharma designofacquisitionschemesandsetupgeometryforanisotropicxraydarkfieldtomographyaxdt AT fschaff designofacquisitionschemesandsetupgeometryforanisotropicxraydarkfieldtomographyaxdt AT mwieczorek designofacquisitionschemesandsetupgeometryforanisotropicxraydarkfieldtomographyaxdt AT fpfeiffer designofacquisitionschemesandsetupgeometryforanisotropicxraydarkfieldtomographyaxdt AT tlasser designofacquisitionschemesandsetupgeometryforanisotropicxraydarkfieldtomographyaxdt
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Design of Acquisition Schemes and Setup Geometry for Anisotropic X-ray Dark-Field Tomography (AXDT)

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