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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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Item Permalink: https://hdl.handle.net/21.11116/0000-0003-96D2-6 Version Permalink: https://hdl.handle.net/21.11116/0000-0003-C765-B
Genre: Poster

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http://indexsmart.mirasmart.com/ISMRM2019/PDFfiles/4996.html (Abstract)
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 Creators:
Zaiss, M1, 2, Author           
Herz, K1, 2, Author           
Deshmane, A1, 2, Author           
Kim, M, Author
Golay, X, Author
Lindig, T, Author           
Bender, B, Author           
Ernemann, U, Author
Scheffler, K1, 2, Author           
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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 Abstract: 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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 Dates: 2019-05
 Publication Status: Published online
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Title: 27th Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2019)
Place of Event: Montréal, QC, Canada
Start-/End Date: 2019-05-11 - 2019-05-16

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Title: ISMRM 27th Annual Meeting & Exhibition
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 4996 Start / End Page: - Identifier: -