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  Unexpected BOLD Behavior at 11.7 Tesla: A Comparison of Experimental Data with the Integrative BOLD Signal Model

Seehafer, J., Uludag, K., Kalthoff, D., Farr, T., & Hoehn, M. (2009). Unexpected BOLD Behavior at 11.7 Tesla: A Comparison of Experimental Data with the Integrative BOLD Signal Model. Poster presented at 17th Annual Meeting of the International Society for Magnetic Resonance in Medicine (ISMRM 2009), Honolulu, HI, USA.

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 Urheber:
Seehafer, JU, Autor
Uludag, K1, 2, Autor           
Kalthoff, D, Autor
Farr, TD, Autor
Hoehn, M, Autor
Affiliations:
1Former Department MRZ, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_2528700              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Zusammenfassung: Synopsis: This fMRI study presents experimental data and theoretical consideration about the unexpected BOLD behavior at high magnetic field strengths greater than 7.0 Tesla. Experimental SE- and GE-EPI data at 7.0 and 11.7 Tesla did not show an increase of BOLD contrast with field strength. The Integrative BOLD Signal Model delivers a possible explanation, namely the decrease of extravascular contributions from venules and arterioles. Furthermore, these predictions are compared to experimental data. It is shown, that the Integrative BOLD Signal Model can describe our data and is giving new perspectives to high field fMRI, which are of definite interest to future experiments.

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 Datum: 2009-04
 Publikationsstatus: Online veröffentlicht
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Veranstaltung

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Titel: 17th Annual Meeting of the International Society for Magnetic Resonance in Medicine (ISMRM 2009)
Veranstaltungsort: Honolulu, HI, USA
Start-/Enddatum: 2009-04-18 - 2009-04-24

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Titel: 17th Annual Meeting of the International Society for Magnetic Resonance in Medicine (ISMRM 2009)
Genre der Quelle: Konferenzband
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Seiten: - Band / Heft: - Artikelnummer: 1604 Start- / Endseite: - Identifikator: -