Co-Registration of Interleaved MEG and ULF MRI Using a 7 Channel Low-Tc SQUID System

被引：44

作者：

Magnelind, Per E. ^{[1
]}

Gomez, John J. ^{[1
]}

Matlashov, Andrei N. ^{[1
]}

Owens, Tuba ^{[1
]}

Sandin, J. Henrik ^{[1
]}

Volegov, Petr L. ^{[1
]}

Espy, Michelle A. ^{[1
]}

机构：

[1] Los Alamos Natl Lab, Appl Modern Phys Grp, Los Alamos, NM 87545 USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2011年 / 21卷 / 03期

关键词：

Magnetic resonance imaging; magnetoencephalography; microtesla; ULTRA-LOW-FIELD; MICROTESLA MRI; MAGNETIC-RESONANCE; HUMAN BRAIN;

D O I：

10.1109/TASC.2010.2088353

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper we report the first co-registered, interleaved measurements of ultra-low field (ULF) magnetic resonance imaging (MRI) and magnetoencephalography (MEG). Interleaved measurements are interesting for the ultimate aim of combining MEG and functional MRI at ULF. The measurement system consisted of 7 channels with second-order gradiometers coupled to low transition-temperature superconducting quantum interference devices (SQUIDs). The ULF MRI was acquired at a measurement field of 94 after a pre-polarization in a 30 mT field. Our results show that the two modalities can be performed with interleaved measurements. However, due to transients from the walls of the magnetically shielded room a waiting time of more than 3 s had to be introduced between the MRI protocol and the auditory stimulus for the MEG.

引用

页码：456 / 460

页数：5

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