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.
OriginalsprogEngelsk
Publikationsdato2022
Antal sider1
StatusUdgivet - 2022
BegivenhedJoint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting - London, Englnd, UK
Varighed: 7 maj 202212 maj 2022
https://www.ismrm.org/22m/

Konference

KonferenceJoint Annual Meeting ISMRM-ESMRMB & ISMRT 31st Annual Meeting
LokationLondon, Englnd, UK
Periode07/05/202212/05/2022
Internetadresse

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