Poblador Rodriguez, Esau;
Moser, Philipp;
Dymerska, Barbara;
Robinson, Simon Daniel;
Schmitt, Benjamin;
van der Kouwe, Andre;
Gruber, Stephan;
... Bogner, Wolfgang; + view all
(2019)
A comparison of dynamic and static B0 mapping approaches for correction of CEST MRI at 7T.
Presented at: ISMRM 27th Annual Meeting & Exhibition, Montreal, QC, Canada.
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Abstract
In contrast to established static B0 correction approaches which assume an invariant static field during a CEST MRI acquisition, we propose three methods which can track and compensate temporal B0 fluctuations by shifting each Z-spectral point separately before MTRasym analysis. We show the benefit of the proposed dynamic methods in comparison to three established static approaches by assessing their performance in the absence/presence of an induced frequency drift. In addition, we investigate the reliability and reproducibility of CEST MRI at ultra-high field (7T) by evaluating the drift’s impact on the B0-corrected MTRasym maps in the brains of five healthy volunteers.
| Type: | Conference item (Presentation) |
|---|---|
| Title: | A comparison of dynamic and static B0 mapping approaches for correction of CEST MRI at 7T |
| Event: | ISMRM 27th Annual Meeting & Exhibition |
| Location: | Montreal, QC, Canada |
| Dates: | 11-16 May 2019 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://archive.ismrm.org/2019/5007.html |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Brain Sciences > UCL Queen Square Institute of Neurology > Imaging Neuroscience |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10190760 |
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