K-space trajectory calibration for improved precision of quantitative ultrashort echo time imaging

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081731%3A_____%2F17%3A00477999" target="_blank" >RIV/68081731:_____/17:00477999 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
K-space trajectory calibration for improved precision of quantitative ultrashort echo time imaging
Original language description
Ultrashort echo time imaging (UTE) is often the method of choice for measurement of short-lived T2 signals from biological tissues. The UTE acquisition is based on radial or spiral sampling schemes which, in general, are sensitive to small discrepancies between prescribed and actual trajectories. Such errors are usually observed as image quality degradation, visible as ghosting or intensity variation. This is even more serious for quantitative applications when intensity variation can cause serious bias in the estimation of measured parameters such as proton density (PD). Here we investigate such behavior of UTE acquisition and demonstrate that proper calibration of the gradient channels could minimize these type of the errors. Phantom experiments proved the efficiency of the application trajectory calibration approach.
Czech name
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Czech description
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Project
<a href="/en/project/GA15-12607S" target="_blank" >GA15-12607S: Design and optimization of ultra-short echo-time sequence for reliable detection of myelin content in the human brain by magnetic resonance imaging.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
11th International Conference on Measurement, Measurement 2017. Proceedings
ISBN
978-80-972629-0-7
ISSN
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e-ISSN
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Number of pages
4
Pages from-to
197-200
Publisher name
Institute of Measurement Science SAS
Place of publication
Bratislava
Event location
Smolenice
Event date
May 29, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
000428658900046

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