MEG Weak Source Imaging Methods Based on Functional Connectivity

DOI

10.2991/bbe-17.2017.83How to use a DOI?

Keywords

Magnetoencephalography, Functional Connectivity, Epilepsy.

Abstract

Beam former, as a class of Magnetoencephalography (MEG) source imaging methods, is widely used. However, it has difficulty in locating weak electromagnetic sources within brain. To solve this problem, this paper attempts to develop a method for MEG weak Source Imaging. Firstly classical beam former is used to extract the source intensities and waveforms. Secondly the strongest source is taken as the seed points and calculate correlation between seed points and other voxel points to obtain Functional Connectivity (FC) images. Finally, overlying the correlation on the anatomical image to get source imaging. Such method is successfully applied to imaging bilateral primary auditory sources in the case of classical beam former fails to locate weak source which is ipsilateral to the auditory stimulus. Such method is of significance in basic and clinical research. For example, it can be used to locate eloquent cortices of epilepsy patients. Identifying these cortices is critical for them to make preoperative planning.

Copyright

© 2017, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Ting WU
AU  - Yuan CUI
AU  - Zhi-guo ZHANG
AU  - Jun-peng ZHANG
AU  - Tian-zi JIANG
PY  - 2017/05
DA  - 2017/05
TI  - MEG Weak Source Imaging Methods Based on Functional Connectivity
BT  - Proceedings of the 2nd International Conference on Biomedical and Biological Engineering 2017 (BBE 2017)
PB  - Atlantis Press
SP  - 517
EP  - 522
SN  - 2468-5747
UR  - https://doi.org/10.2991/bbe-17.2017.83
DO  - 10.2991/bbe-17.2017.83
ID  - WU2017/05
ER  -