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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, G., 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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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-DFE2-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-9C76-7
Genre: Poster

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Van de Moortele, P-F, Author
Pfeuffer, J1, Author              
Glover , GH, Author
Ugurbil, K, Author
Hu, X, Author
Affiliations:
1External Organizations, ou_persistent22              

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 Abstract: 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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 Dates: 2002-05
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: 1227
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Title: 10th Scientific Meeting of the International Society of Magnetic Resonance in Medicine (ISMRM 2002)
Place of Event: Honolulu, HI, USA
Start-/End Date: 2002-05-18 - 2002-05-24

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Title: 10th Scientific Meeting of the International Society of Magnetic Resonance in Medicine (ISMRM 2002)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 1405 Start / End Page: - Identifier: -