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  The impact of vessel size, orientation and intravascular contribution on the neurovascular fingerprint of BOLD bSSFP fMRI

Báez-Yánez, M., Ehses, P., Mirkes, C., Tsai, P., Kleinfeld, D., & Scheffler, K. (2017). The impact of vessel size, orientation and intravascular contribution on the neurovascular fingerprint of BOLD bSSFP fMRI. NeuroImage, 163, 13-23. doi:10.1016/j.neuroimage.2017.09.015.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0000-C276-0 Version Permalink: http://hdl.handle.net/21.11116/0000-0000-C277-F
Genre: Journal Article

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Báez-Yánez, MG1, 2, Author              
Ehses, P2, Author              
Mirkes, C2, Author              
Tsai, PS, Author
Kleinfeld, D, Author
Scheffler, K1, 2, Author              
Affiliations:
1Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497794              
2Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796              

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 Abstract: Monte Carlo simulations have been used to analyze oxygenation-related signal changes in pass-band balanced steady state free precession (bSSFP) as well as in gradient echo (GE) and spin echo (SE) sequences. Signal changes were calculated for artificial cylinders and neurovascular networks acquired from the mouse parietal cortex by two-photon laser scanning microscopy at 1 μm isotropic resolution. Signal changes as a function of vessel size, blood volume, vessel orientation to the main magnetic field B0 as well as relations of intra- and extravascular and of micro- and macrovascular contributions have been analyzed. The results show that bSSFP is highly sensitive to extravascular and microvascular components. Furthermore, GE and bSSFP, and to a lesser extent SE, exhibit a strong dependence of their signal change on the orientation of the vessel network to B0.

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 Dates: 2017-12
 Publication Status: Published in print
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 Identifiers: DOI: 10.1016/j.neuroimage.2017.09.015
BibTex Citekey: BaezYanezEMTKS2017
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Title: NeuroImage
Source Genre: Journal
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Pages: - Volume / Issue: 163 Sequence Number: - Start / End Page: 13 - 23 Identifier: -