Robust measurements of current-induced magnetic fields in the human brain by EPI

Gregersen, F; Göksu, C; Eroğlu, H; Zuo, Z; Thielscher, A; Hanson, L

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Robust measurements of current-induced magnetic fields in the human brain by EPI

Gregersen, F., Göksu, C., Eroğlu, H., Zuo, Z., Thielscher, A., & Hanson, L. (2022). Robust measurements of current-induced magnetic fields in the human brain by EPI. Poster presented at Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting (ISMRM 2022), London, UK.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000A-5C44-3 Version Permalink: https://hdl.handle.net/21.11116/0000-000A-5C45-2

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https://submissions.mirasmart.com/ISMRM2022/Itinerary/ConferenceMatrixEventDetail.aspx?ses=D-64 (Abstract) Open Access status unknown

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Gregersen, F, Author
Göksu, C¹, Author
Eroğlu, H, Author
Zuo, Z, Author
Thielscher, A, Author
Hanson, L, Author

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1Department High-Field Magnetic Resonance, Max Planck Institute for Biological Cybernetics, Max Planck Society, ou_1497796

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Abstract: Magnetic resonance current density imaging (MRCDI) can measure the magnetic fields created in the human brain from currents injected via surface electrodes. Previous methods have demonstrated high sensitivity sufficient for low current strengths (~1 mA). However, they have also proven susceptible to physiological noise. Here we increase the temporal resolution of the method and thereby the robustness to physiological noise by using echo-planar imaging (EPI) for the acquisition. We show that the method produces reliable magnetic field measurements with an average sensitivity of 52 pT for a 2 minutes scan with 3 mm isotropic resolution.

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Dates: Published Online: 2022-05

Publication Status: Published online

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Title: Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting (ISMRM 2022)

Place of Event: London, UK

Start-/End Date: 2022-05-07 - 2022-05-12

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Title: Joint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting (ISMRM 2022)

Source Genre: Proceedings

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Pages: - Volume / Issue: - Sequence Number: 2916 Start / End Page: - Identifier: -