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dc.contributor.author
Busch, Julia
dc.contributor.author
Vannesjo, S. Johanna
dc.contributor.author
Barmet, Christoph
dc.contributor.author
Prüssmann, Klaas P.
dc.contributor.author
Kozerke, Sebastian
dc.date.accessioned
2019-05-09T16:02:16Z
dc.date.available
2017-06-11T15:14:11Z
dc.date.available
2019-05-09T16:02:16Z
dc.date.issued
2014
dc.identifier.issn
1097-6647
dc.identifier.issn
1532-429X
dc.identifier.other
10.1186/s12968-014-0097-6
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/95804
dc.identifier.doi
10.3929/ethz-b-000095804
dc.description.abstract
Background The accuracy of phase-contrast cardiovascular magnetic resonance (PC-CMR) can be compromised by background phase errors. It is the objective of the present work to provide an analysis of the temperature dependence of background phase errors in PC-CMR by means of gradient mount temperature sensing and magnetic field monitoring. Methods Background phase errors were measured for various temperatures of the gradient mount using magnetic field monitoring and validated in a static phantom. The effect of thermal changes during k-space acquisition was simulated and confirmed with measurements in a stationary phantom. Results The temperature of the gradient mount was found to increase by 20–30 K during PC-CMR measurements of 6–12 min duration. Associated changes in background phase errors of up to 11% or 0.35 radian were measured at 10 cm from the magnet’s iso-center as a result of first order offsets. Zeroth order phase errors exhibited little thermal dependence. Conclusions It is concluded that changes in gradient mount temperature significantly modify background phase errors during PC-CMR with high gradient duty cycle. Since temperature increases significantly during the first minutes of scanning the results presented are also of relevance for single-slice or multi-slice PC-CMR scans. The findings prompt for further studies to investigate advanced correction methods taking into account gradient temperature and/or the use of concurrent field-monitoring to map gradient-induced fields throughout the scan.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
BioMed Central
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/4.0/
dc.subject
Cardiovascular magnetic resonance
en_US
dc.subject
Phase-contrast
en_US
dc.subject
4D flow
en_US
dc.subject
Background phase error
en_US
dc.subject
Thermal stability
en_US
dc.subject
Magnetic field monitoring
en_US
dc.title
Analysis of temperature dependence of background phase errors in phase-contrast cardiovascular magnetic resonance
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 4.0 International
dc.date.published
2014
ethz.journal.title
Journal of Cardiovascular Magnetic Resonance
ethz.journal.volume
16
en_US
ethz.journal.abbreviated
J Cardiovasc Magn Reson
ethz.pages.start
97
en_US
ethz.size
12 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.wos
ethz.identifier.nebis
005531885
ethz.publication.place
London
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02140 - Dep. Inf.technologie und Elektrotechnik / Dep. of Inform.Technol. Electrical Eng.::02631 - Institut für Biomedizinische Technik / Institute for Biomedical Engineering::09548 - Kozerke, Sebastian / Kozerke, Sebastian
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02140 - Dep. Inf.technologie und Elektrotechnik / Dep. of Inform.Technol. Electrical Eng.::02631 - Institut für Biomedizinische Technik / Institute for Biomedical Engineering::03628 - Prüssmann, Klaas P. / Prüssmann, Klaas P.
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02140 - Dep. Inf.technologie und Elektrotechnik / Dep. of Inform.Technol. Electrical Eng.::02631 - Institut für Biomedizinische Technik / Institute for Biomedical Engineering::09548 - Kozerke, Sebastian / Kozerke, Sebastian
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02140 - Dep. Inf.technologie und Elektrotechnik / Dep. of Inform.Technol. Electrical Eng.::02631 - Institut für Biomedizinische Technik / Institute for Biomedical Engineering::03628 - Prüssmann, Klaas P. / Prüssmann, Klaas P.
ethz.date.deposited
2017-06-11T15:14:18Z
ethz.source
ECIT
ethz.identifier.importid
imp593652c56326352569
ethz.ecitpid
pub:150187
ethz.eth
yes
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-15T04:13:43Z
ethz.rosetta.lastUpdated
2019-05-09T16:02:30Z
ethz.rosetta.exportRequired
true
ethz.rosetta.versionExported
true
ethz.COinS
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