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  Respiration-Induced B0 Fluctuations in the Human Brain at 7 Tesla and its Spatial Distribution

Van de Moortele, P.-F., Pfeuffer, J., Glover GH, Ugurbil, K., & Hu, X. (2002). Respiration-Induced B0 Fluctuations in the Human Brain at 7 Tesla and its Spatial Distribution. Poster presented at 10th Scientific Meeting of the International Society of Magnetic Resonance in Medicine (ISMRM 2002), Honolulu, HI, USA.

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 Urheber:
Van de Moortele, P-F, Autor
Pfeuffer, J1, Autor           
Glover GH, Ugurbil, K, Autor
Hu, X, Autor
Affiliations:
1Department Physiology of Cognitive Processes, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497798              

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 Zusammenfassung: B0 fluctuations in the human brain induced by susceptibility changes during respiration were studied at 7T. In FIDs measured after a single RF pulse, a Respiration Induced Resonance Offset (RIRO) with large amplitude was consistently detected although the amplitude varied from 1.45 Hz to 4 Hz between subjects. In transverse EPI images in the occipital lobe, the RIRO amplitude showed a monotonic increase along Z-axis toward the lungs. Dynamic 3D FLASH phase maps revealed that an analytical model can describe the spatial distribution of RIRO accurately. Subsequent apparent motions in EPI series and correction strategies are discussed.

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 Datum: 2002-05
 Publikationsstatus: Erschienen
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 Identifikatoren: URI: http://www.ismrm.org/02/
BibTex Citekey: 1227
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Titel: 10th Scientific Meeting of the International Society of Magnetic Resonance in Medicine (ISMRM 2002)
Veranstaltungsort: Honolulu, HI, USA
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