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  Tomographic X-ray scattering based on invariant reconstruction : analysis of the 3D nanostructure of bovine bone

De Falco, P., Weinkamer, R., Wagermaier, W., Li, C., Snow, T., Terrill, N. J., et al. (2021). Tomographic X-ray scattering based on invariant reconstruction: analysis of the 3D nanostructure of bovine bone. Journal of Applied Crystallography, 54(2), 486-497. doi:10.1107/S1600576721000881.

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 Creators:
De Falco, Paolino1, Author              
Weinkamer, Richard1, Author              
Wagermaier, Wolfgang2, Author              
Li, Chenghao2, Author              
Snow, Tim, Author
Terrill, Nicholas J., Author
Gupta, Himadri S., Author
Goyal, Pawan, Author
Stoll, Martin, Author
Benner, Peter, Author
Fratzl, Peter3, Author              
Affiliations:
1Richard Weinkamer, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863295              
2Wolfgang Wagermaier, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863296              
3Peter Fratzl, Biomaterialien, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863294              

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Free keywords: small-angle X-ray scattering, SAXS, tomography, bovine bone, fibrolamellar unit, T parameter, scattering tomography, fibrolamellar bone
 Abstract: Small-angle X-ray scattering (SAXS) is an effective characterization technique for multi-phase nanocomposites. The structural complexity and heterogeneity of biological materials require the development of new techniques for the 3D characterization of their hierarchical structures. Emerging SAXS tomographic methods allow reconstruction of the 3D scattering pattern in each voxel but are costly in terms of synchrotron measurement time and computer time. To address this problem, an approach has been developed based on the reconstruction of SAXS invariants to allow for fast 3D characterization of nanostructured inhomogeneous materials. SAXS invariants are scalars replacing the 3D scattering patterns in each voxel, thus simplifying the 6D reconstruction problem to several 3D ones. Standard procedures for tomographic reconstruction can be directly adapted for this problem. The procedure is demonstrated by determining the distribution of the nanometric bone mineral particle thickness (ıt T} parameter) throughout a macroscopic 3D volume of bovine cortical bone. The {ıt T parameter maps display spatial patterns of particle thickness in fibrolamellar bone units. Spatial correlation between the mineral nano⁻structure and microscopic features reveals that the mineral particles are particularly thin in the vicinity of vascular channels.

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Language(s): eng - English
 Dates: 2021-03-032021
 Publication Status: Published in print
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 Rev. Type: -
 Identifiers: DOI: 10.1107/S1600576721000881
BibTex Citekey: DeFalco:vg5128
PMID: 0604
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Title: Journal of Applied Crystallography
  Abbreviation : J. Appl. Cryst.
Source Genre: Journal
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Publ. Info: Oxford, England : Blackwell Publishing on behalf of the International Union of Crystallography
Pages: - Volume / Issue: 54 (2) Sequence Number: - Start / End Page: 486 - 497 Identifier: ISSN: 0021-8898