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

Frodi Gregersen, Cihan Göksu, Hasan H Eroğlu, Zhentao Zuo, Axel Thielscher, L.G. Hanson

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 sucient 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 echoplanar 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.
Original languageEnglish
Publication date2022
Number of pages1
Publication statusPublished - 2022
EventJoint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting - London, Englnd, UK
Duration: 7 May 202212 May 2022
https://www.ismrm.org/22m/

Conference

ConferenceJoint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting
LocationLondon, Englnd, UK
Period07/05/202212/05/2022
Internet address

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