Phase‐contrast velocity mapping for highly diffusive fluids: Optimal bipolar gradient pulse parameters for hyperpolarized helium‐3
Identifieur interne : 000073 ( Istex/Checkpoint ); précédent : 000072; suivant : 000074Phase‐contrast velocity mapping for highly diffusive fluids: Optimal bipolar gradient pulse parameters for hyperpolarized helium‐3
Auteurs : Lionel Martin [France] ; Xavier Maître [France] ; Ludovic De Rochefort [France] ; Mathieu Sarracanie [France] ; Marlies Friese [France, Australie] ; Pascal Hagot [France] ; Emmanuel Durand [France]Source :
- Magnetic Resonance in Medicine [ 0740-3194 ] ; 2014-10.
Abstract
In MR‐velocity phase‐contrast measurements, increasing the encoding bipolar gradient, i.e., decreasing the field of speed, usually improves measurement precision. However, in gases, fast diffusion during the bipolar gradient pulses may dramatically decrease the signal‐to‐noise ratio, thus degrading measurement precision. These two effects are contradictory. This work aims at determining the optimal sequence parameters to improve the velocity measurement precision.
Url:
DOI: 10.1002/mrm.25005
Affiliations:
- Australie, France
- Alsace (région administrative), Grand Est
- Orsay, Strasbourg
- Université de Strasbourg
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However, in gases, fast diffusion during the bipolar gradient pulses may dramatically decrease the signal‐to‐noise ratio, thus degrading measurement precision. These two effects are contradictory. This work aims at determining the optimal sequence parameters to improve the velocity measurement precision.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Alsace (région administrative)</li><li>Grand Est</li></region><settlement><li>Orsay</li><li>Strasbourg</li></settlement><orgName><li>Université de Strasbourg</li></orgName></list><tree><country name="France"><noRegion><name sortKey="Martin, Lionel" sort="Martin, Lionel" uniqKey="Martin L" first="Lionel" last="Martin">Lionel Martin</name></noRegion><name sortKey="De Rochefort, Ludovic" sort="De Rochefort, Ludovic" uniqKey="De Rochefort L" first="Ludovic" last="De Rochefort">Ludovic De Rochefort</name><name sortKey="Durand, Emmanuel" sort="Durand, Emmanuel" uniqKey="Durand E" first="Emmanuel" last="Durand">Emmanuel Durand</name><name sortKey="Durand, Emmanuel" sort="Durand, Emmanuel" uniqKey="Durand E" first="Emmanuel" last="Durand">Emmanuel Durand</name><name sortKey="Durand, Emmanuel" sort="Durand, Emmanuel" uniqKey="Durand E" first="Emmanuel" last="Durand">Emmanuel Durand</name><name sortKey="Friese, Marlies" sort="Friese, Marlies" uniqKey="Friese M" first="Marlies" last="Friese">Marlies Friese</name><name sortKey="Hagot, Pascal" sort="Hagot, Pascal" uniqKey="Hagot P" first="Pascal" last="Hagot">Pascal Hagot</name><name sortKey="Maitre, Xavier" sort="Maitre, Xavier" uniqKey="Maitre X" first="Xavier" last="Maître">Xavier Maître</name><name sortKey="Sarracanie, Mathieu" sort="Sarracanie, Mathieu" uniqKey="Sarracanie M" first="Mathieu" last="Sarracanie">Mathieu Sarracanie</name></country><country name="Australie"><noRegion><name sortKey="Friese, Marlies" sort="Friese, Marlies" uniqKey="Friese M" first="Marlies" last="Friese">Marlies Friese</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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