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

页码：839 / 842

页数：4

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