Effect of detector in-plane rotation misalignment on dimensional measurements using helical CT acquisition

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F22%3APU145374" target="_blank" >RIV/00216305:26620/22:PU145374 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26620/21:PU142583

Výsledek na webu

<a href="http://www.ndt.net/?id=26607" target="_blank" >http://www.ndt.net/?id=26607</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of detector in-plane rotation misalignment on dimensional measurements using helical CT acquisition

Popis výsledku v původním jazyce

One of the critical factors that may significantly contribute to X-ray computed tomography measurement uncertainty is the misalignment of CT system components from ideal geometry assumed by tomographic reconstruction. It is proven to cause image artifacts, inhomogeneous magnification, thus leading to dimensional measurement errors. There is a lack of studies on helical trajectory scanning in metrological applications, focusing on the detector's angular misalignments. We will present results of CT measurements with misaligned detector by in-plane rotation for circular, double-helix, and space-filling trajectory. They prove that such misalignment may cause significant measurements errors, depending on the misalignments magnitude and applied acquisition trajectory.

Název v anglickém jazyce

Effect of detector in-plane rotation misalignment on dimensional measurements using helical CT acquisition

Popis výsledku anglicky

One of the critical factors that may significantly contribute to X-ray computed tomography measurement uncertainty is the misalignment of CT system components from ideal geometry assumed by tomographic reconstruction. It is proven to cause image artifacts, inhomogeneous magnification, thus leading to dimensional measurement errors. There is a lack of studies on helical trajectory scanning in metrological applications, focusing on the detector's angular misalignments. We will present results of CT measurements with misaligned detector by in-plane rotation for circular, double-helix, and space-filling trajectory. They prove that such misalignment may cause significant measurements errors, depending on the misalignments magnitude and applied acquisition trajectory.

Druh

O - Ostatní výsledky

CEP obor

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OECD FORD obor

20301 - Mechanical engineering

Projekt

<a href="/cs/project/LM2018110" target="_blank" >LM2018110: Výzkumná infrastruktura CzechNanoLab</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů