Multi-channel SQUID system for MEG and ultra-low-field MRI

被引：52
|
作者：
Zotev, Vadim S. [1 ]
Matlachov, Andrei N. [1 ]
Volegov, Petr L. [1 ]
Sandin, Henrik J. [1 ]
Espy, Michelle A. [1 ]
Mosher, John C. [1 ]
Urbaitis, Algis V. [1 ]
Newman, Shaun G. [1 ]
Kraus, Robert H., Jr. [1 ]
机构：
[1] Los Alamos Natl Lab, Grp Appl Modern Phys, Los Alamos, NM 87545 USA
来源：
IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2007年 / 17卷 / 02期
关键词：
biomagnetism; MEG; SQUID; ULF MRI;
D O I：
10.1109/TASC.2007.898198
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：
A seven-channel system capable of performing both magnetoencephalography (MEG) and ultra-low-field magnetic resonance imaging (ULF MRI) is described. The system consists of seven second-order SQUID gradiometers with 37 nun diameter and 60 mm baseline, having magnetic field resolution of 1.2-2.8fT/root Hz. It also includes four sets of coils for 2-D Fourier imaging with pre-polarization. The system's MEG performance was demonstrated by measurements of auditory evoked response. The system was also used to obtain a multi-channel 2-D image of a whole human hand at the measurement field of 46 microtesla with 3 by 3 mm resolution.
引用
收藏
页码：839 / 842
页数：4
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