Artifact removal in the contour areas of SAXS-CT images by Tikhonov-L1 minimization

Small-angle X-ray scattering (SAXS) coupled with computed tomography (CT), denoted SAXS-CT, has enabled the spatial distribution of the characteristic parameters (e.g. size, shape, surface, length) of nanoscale structures inside samples to be visualized. In this work, a new scheme with Tikhonov regu...

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Detalles Bibliográficos
Autores principales: Ogawa, Hiroki, Ono, Shunsuke, Watanabe, Yuki, Nishikawa, Yukihiro, Nishitsuji, Shotaro, Kabe, Taizo, Takenaka, Mikihito
Formato: Online Artículo Texto
Lenguaje:English
Publicado: International Union of Crystallography 2021
Materias:
Research Papers
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8662970/
https://www.ncbi.nlm.nih.gov/pubmed/34963766
http://dx.doi.org/10.1107/S1600576721011523
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author Ogawa, Hiroki
Ono, Shunsuke
Watanabe, Yuki
Nishikawa, Yukihiro
Nishitsuji, Shotaro
Kabe, Taizo
Takenaka, Mikihito
author_facet Ogawa, Hiroki
Ono, Shunsuke
Watanabe, Yuki
Nishikawa, Yukihiro
Nishitsuji, Shotaro
Kabe, Taizo
Takenaka, Mikihito
author_sort Ogawa, Hiroki
collection PubMed
description Small-angle X-ray scattering (SAXS) coupled with computed tomography (CT), denoted SAXS-CT, has enabled the spatial distribution of the characteristic parameters (e.g. size, shape, surface, length) of nanoscale structures inside samples to be visualized. In this work, a new scheme with Tikhonov regularization was developed to remove the effects of artifacts caused by streak scattering originating from the reflection of the incident beam in the contour regions of the sample. The noise due to streak scattering was successfully removed from the sinogram image and hence the CT image could be reconstructed free from artifacts in the contour regions.
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spelling pubmed-86629702021-12-27 Artifact removal in the contour areas of SAXS-CT images by Tikhonov-L1 minimization Ogawa, Hiroki Ono, Shunsuke Watanabe, Yuki Nishikawa, Yukihiro Nishitsuji, Shotaro Kabe, Taizo Takenaka, Mikihito J Appl Crystallogr Research Papers Small-angle X-ray scattering (SAXS) coupled with computed tomography (CT), denoted SAXS-CT, has enabled the spatial distribution of the characteristic parameters (e.g. size, shape, surface, length) of nanoscale structures inside samples to be visualized. In this work, a new scheme with Tikhonov regularization was developed to remove the effects of artifacts caused by streak scattering originating from the reflection of the incident beam in the contour regions of the sample. The noise due to streak scattering was successfully removed from the sinogram image and hence the CT image could be reconstructed free from artifacts in the contour regions. International Union of Crystallography 2021-11-30 /pmc/articles/PMC8662970/ /pubmed/34963766 http://dx.doi.org/10.1107/S1600576721011523 Text en © Hiroki Ogawa et al. 2021 https://creativecommons.org/licenses/by/4.0/This is an open-access article distributed under the terms of the Creative Commons Attribution (CC-BY) Licence, which permits unrestricted use, distribution, and reproduction in any medium, provided the original authors and source are cited.
spellingShingle Research Papers
Ogawa, Hiroki
Ono, Shunsuke
Watanabe, Yuki
Nishikawa, Yukihiro
Nishitsuji, Shotaro
Kabe, Taizo
Takenaka, Mikihito
Artifact removal in the contour areas of SAXS-CT images by Tikhonov-L1 minimization
title Artifact removal in the contour areas of SAXS-CT images by Tikhonov-L1 minimization
title_full Artifact removal in the contour areas of SAXS-CT images by Tikhonov-L1 minimization
title_fullStr Artifact removal in the contour areas of SAXS-CT images by Tikhonov-L1 minimization
title_full_unstemmed Artifact removal in the contour areas of SAXS-CT images by Tikhonov-L1 minimization
title_short Artifact removal in the contour areas of SAXS-CT images by Tikhonov-L1 minimization
title_sort artifact removal in the contour areas of saxs-ct images by tikhonov-l1 minimization
topic Research Papers
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8662970/
https://www.ncbi.nlm.nih.gov/pubmed/34963766
http://dx.doi.org/10.1107/S1600576721011523
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