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  Model the single-venule fMRI signal at the millisecond scale

He, Y., Zhang, K., & Yu, X. (2015). Model the single-venule fMRI signal at the millisecond scale. Poster presented at 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada.

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Item Permalink: https://hdl.handle.net/11858/00-001M-0000-002A-4606-0 Version Permalink: https://hdl.handle.net/21.11116/0000-0006-9B8C-E
Genre: Poster

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http://www.ismrm.org/15/program_files/TueEPS02.htm (Publisher version)
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 Creators:
He, Y1, 2, Author           
Zhang, K, Author           
Yu, X1, 2, Author           
Affiliations:
1Research Group Translational Neuroimaging and Neural Control, Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_2528695              
2Max Planck Institute for Biological Cybernetics, Max Planck Society, Spemannstrasse 38, 72076 Tübingen, DE, ou_1497794              

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 Abstract: The hemodynamic response function (HRF) of fMRI signal varies according to different conditions and tasks. The estimate of HRF highly relies on the spatiotemporal resolution of fMRI raw images. Here, we developed a new algorithm to estimate the single-vessel specific HRF from the fMRI signal acquired by multi-echo line-scanning method (MELS-fMRI). This method simultaneously performed T2* decay deconvolution and HRF optimization. Given the millisecond scale sampling rate for multi-echo acquisition, the estimated HRF bears high temporal feature of fMRI signal propagation through different venules in the deep layer cortex. This is the first step to model millisecond scale fMRI signal.

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 Dates: 2015-06
 Publication Status: Issued
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 Identifiers: BibTex Citekey: HeZY2015
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Title: 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015)
Place of Event: Toronto, Canada
Start-/End Date: 2015-05-30 - 2015-06-05

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Title: 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015)
Source Genre: Proceedings
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Pages: - Volume / Issue: - Sequence Number: 3749 Start / End Page: - Identifier: -