Correction of the X-ray tube spot movement as a tool for improvement of the micro-tomography quality

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F16%3A00458310" target="_blank" >RIV/68378297:_____/16:00458310 - isvavai.cz</a>
Result on the web
<a href="http://iopscience.iop.org/article/10.1088/1748-0221/11/01/C01029" target="_blank" >http://iopscience.iop.org/article/10.1088/1748-0221/11/01/C01029</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1748-0221/11/01/C01029" target="_blank" >10.1088/1748-0221/11/01/C01029</a>

Result language
angličtina
Original language name
Correction of the X-ray tube spot movement as a tool for improvement of the micro-tomography quality
Original language description
Nowadays X-ray tubes in conjunction with digital pixelated imagers are standardly utilized for high resolution radiography with several micrometre or even sub-micrometre resolution. Achievement of the same resolution in X-ray computed tomography is a more demanding task due to the time-dependent tube electron beam drift as well as thermal deformations of the tube. In our work, the beam drift caused by the long-term stabilization of the tube electron optics was measured by observation of radiographs of 75 μm big tin ball rigidly mounted onto the tube head. The tube spot movement comprising both the beam drift and the movement caused by thermal deformations of the tube and its fixture was evaluated measuring the virtual movement of the inspected object. For this purpose, radiographs were recorded periodically at the same object position. Both the beam drift as well as spot movement were evaluated with subpixel resolution using digital image correlation tools. It was proven that the quality of a tomographic reconstruction can be significantly improved by the correction of the spot movement.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
AL - Art, architecture, cultural heritage
OECD FORD branch
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Project
<a href="/en/project/LO1219" target="_blank" >LO1219: Sustainable advanced development of CET</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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