Počet záznamů: 1
Wide-cone angle phase-contrast X-ray computed tomography of synthetic polymer materials
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SYSNO ASEP 0532960 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Wide-cone angle phase-contrast X-ray computed tomography of synthetic polymer materials Tvůrce(i) 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)Zdroj.dok. IEEE Transactions on Instrumentation and Measurement. - : Institute of Electrical and Electronics Engineers - ISSN 0018-9456
Roč. 69, č. 11 (2020), s. 8910-8918Poč.str. 9 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova X-ray computed tomography ; wide-cone angle X-ray computed tomography ; phase contrast imaging Vědní obor RIV CD - Makromolekulární chemie Obor OECD Polymer science CEP TN01000008 GA TA ČR - Technologická agentura ČR Způsob publikování Omezený přístup Institucionální podpora UMCH-V - RVO:61389013 UT WOS 000577673200025 EID SCOPUS 85093955451 DOI 10.1109/TIM.2020.2995232 Anotace 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). Pracoviště Ústav makromolekulární chemie Kontakt Eva Čechová, cechova@imc.cas.cz ; Tel.: 296 809 358 Rok sběru 2021 Elektronická adresa https://ieeexplore.ieee.org/document/9094587
Počet záznamů: 1