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Wide-cone angle phase-contrast X-ray computed tomography of synthetic polymer materials
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SYSNO ASEP 0532960 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Wide-cone angle phase-contrast X-ray computed tomography of synthetic polymer materials Author(s) Kalasová, D. (CZ)
Břínek, A. (CZ)
Šlouf, Miroslav (UMCH-V) RID, ORCID
Dušková-Smrčková, Miroslava (UMCH-V) RID
Zikmund, T. (CZ)
Patáková, Z. (CZ)
Kaiser, J. (CZ)Source Title IEEE Transactions on Instrumentation and Measurement. - : Institute of Electrical and Electronics Engineers - ISSN 0018-9456
Roč. 69, č. 11 (2020), s. 8910-8918Number of pages 9 s. Language eng - English Country US - United States Keywords X-ray computed tomography ; wide-cone angle X-ray computed tomography ; phase contrast imaging Subject RIV CD - Macromolecular Chemistry OECD category Polymer science R&D Projects TN01000008 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) Method of publishing Limited access Institutional support UMCH-V - RVO:61389013 UT WOS 000577673200025 EID SCOPUS 85093955451 DOI 10.1109/TIM.2020.2995232 Annotation X-ray phase-contrast imaging (PCI) is sensitive to the phase shift of X-rays induced by the sample. This is advantageous for low X-ray absorption samples, such as polymers, biomaterials, tissues, and scaffolds. We show propagation-based phase-contrast X-ray computed tomography (CT) imaging [propagation-based imaging (PBI)] in a specific configuration with the wide-cone angle (>50°), polychromatic X-ray source, and a flat-panel detector. We demonstrate PBI on measurements with a polymer composite. The experiments show a tradeoff between high signal-to-noise ratio (SNR) acquisition at very large cone angles and low-SNR acquisition at large propagation distances. The degree of data quality improvement by phase retrieval increases for high propagation distances. We show the application of PBI on macroporous synthetic hydrogels, which represents an important type of material with a complex 3-D morphology in the field of polymer science. With the use of the above-described experimental configuration, it is possible to visualize the hydrogels and segment the structure of the sample in tomographic data. The segmented sample can be used for morphology characterization, such as the description of internal space or determination of specific surface area (SSA). Workplace Institute of Macromolecular Chemistry Contact Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Year of Publishing 2021 Electronic address https://ieeexplore.ieee.org/document/9094587
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