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  Artifacts in dynamic CEST MRI due to motion and field shifts – implications for glucoCEST MRI at 3T

Zaiss, M., Herz, K., Deshmane, A., Kim, M., Golay, X., Lindig, T., et al. (2019). Artifacts in dynamic CEST MRI due to motion and field shifts – implications for glucoCEST MRI at 3T. Poster presented at 27th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2019), Montréal, QC, Canada.

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Zaiss, M1, 2, Autor           
Herz, K1, 2, Autor           
Deshmane, A1, 2, Autor           
Kim, M, Autor
Golay, X, Autor
Lindig, T, Autor           
Bender, B, Autor           
Ernemann, U, Autor
Scheffler, K1, 2, Autor           
Affiliations:
1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              

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 Zusammenfassung: Dynamic glucose enhanced imaging yields expected CEST effects that are rather small in tissue especially at clinical field strengths (<2 %). Small movements during the dynamic CEST measurement together with a subtraction-based evaluation can lead to pseudo CEST effects of the same order of magnitude. We studied these effects by virtual difference images of a basline scan that were altered by the rigid body transformations and B0 shifts. Minor motion (0.6 mm translations) and B0 artifacts (7 Hz shift) can lead to pseudo effects in the order of 1% in dynamic CEST imaging, despite no glucose was injected at all.

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 Datum: 2019-05
 Publikationsstatus: Online veröffentlicht
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Titel: 27th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2019)
Veranstaltungsort: Montréal, QC, Canada
Start-/Enddatum: 2019-05-11 - 2019-05-16

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Titel: ISMRM 27th Annual Meeting & Exhibition
Genre der Quelle: Konferenzband
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Seiten: - Band / Heft: - Artikelnummer: 4996 Start- / Endseite: - Identifikator: -