Voxel Size Calibration for High-resolution CT

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F20%3APU135523" target="_blank" >RIV/00216305:26620/20:PU135523 - isvavai.cz</a>
Alternative codes found
RIV/00216305:26620/20:PU135525 RIV/00177016:_____/20:N0000081
Result on the web
<a href="https://www.ndt.net/search/docs.php3?id=25109" target="_blank" >https://www.ndt.net/search/docs.php3?id=25109</a>
DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Voxel Size Calibration for High-resolution CT
Original language description
In cone-beam X-ray computed tomography (CT), distances between the source, object, and detector influence the visual fidelity and voxel size of a reconstructed volume. Calibration using reference objects is an appropriate tool for preventing errors in the estimates of these distances. There is, however, a lack of such objects for high-resolution systems with a small field of view (FoV). In this work, we propose a method to measure the distances mentioned above, improving the determination of voxel size. We use a custom reference object suitable for a FoV of around one millimeter. Many approaches have been developed for this calibration task and discussed in the literature, but none apply to CT scanners with a small FoV and a cone-beam magnification close to one. The proposed method thus aims to provide a calibration procedure for such devices. A Rigaku Nano3DX CT scanner has been calibrated through this method and used for practical validation of the method's accuracy. Results have shown that this app
Czech name
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Czech description
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Project
<a href="/en/project/LQ1601" target="_blank" >LQ1601: CEITEC 2020</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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