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  A realistic vascular model for BOLD signal up to 16.4 T

Müller-Bierl, B., Pawlak, V., Kerr, J., Ugurbil, K., & Uludag, K. (2010). A realistic vascular model for BOLD signal up to 16.4 T. Poster presented at ISMRM-ESMRMB Joint Annual Meeting 2010, Stockholm, Sweden.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0013-C060-F Version Permalink: http://hdl.handle.net/21.11116/0000-0002-A521-E
Genre: Poster

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ISMRM-2010-1129.PDF (Any fulltext), 475KB
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Müller-Bierl, B1, 2, Author              
Pawlak, V2, 3, Author              
Kerr, J2, 3, Author              
Ugurbil, K, Author
Uludag, K1, 2, Author              
Affiliations:
1Former Department MRZ, Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_2528700              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              
3Research Group Neural Population Imaging, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497807              

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 Abstract: The blood oxygenation level-dependent (BOLD) signal using functional magnetic resonance imaging (fMRI) is currently the most popular imaging method to study brain function non-invasively. The sensitivity of the BOLD signal to different types of MRI sequences and vessel sizes is currently under investigation [1]. Gradient echo (GRE) sequences are known to be sensitive to larger vessels (venules and veins), whereas spin-echo (SE) sequences are generally more sensitive to smaller vessels (venules and capillaries), especially at high magnetic field strength [2, 3]. However, the widely used single vessel model is only an approximation to the realistic vascular distribution. Realistic vascular models have been proposed by Marques and Bowtell [4] and, recently, by Chen et al.[5]. We herein present a realistic vascular model (RVM) where diffusion is accounted for by a Monte-Carlo random walk.

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 Dates: 2010-05
 Publication Status: Published in print
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 Identifiers: BibTex Citekey: MullerBierlPKUU2012
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Title: ISMRM-ESMRMB Joint Annual Meeting 2010
Place of Event: Stockholm, Sweden
Start-/End Date: 2010-05-01 - 2010-05-07

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Title: ISMRM-ESMRMB Joint Annual Meeting 2010
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 1129 Start / End Page: - Identifier: -