Magnetoencephalography (MEG) and magnetic resonance imaging at ultra-low fields (ULF MRI) are two methods based on the ability of SQUID (superconducting quantum interference device) sensors to detect femtotesla magnetic fields. Combination of these methods will allow simultaneous functional (MEG) and structural (ULF MRI) imaging of the human brain. In this paper, we report the first implementation of a multi-sensor SQUID system designed for both MEG and ULF MRI. We present a multi-channel image of a human hand obtained at 46 microtesla field, as well as results of auditory MEG measurements with the new system.
Cite
@article{arxiv.physics/0612048,
title = {Multi-sensor system for simultaneous ultra-low-field MRI and MEG},
author = {V. S. Zotev and A. N. Matlachov and P. L. Volegov and H. J. Sandin and M. A. Espy and J. C. Mosher and A. V. Urbaitis and S. G. Newman and R. H. Kraus},
journal= {arXiv preprint arXiv:physics/0612048},
year = {2009}
}
Comments
To appear in Proceedings of 15th International Conference on Biomagnetism