Synthetic gradiometer systems for MEG

被引：18

作者：

Fife, AA

Vrba, J

Robinson, SE

Anderson, G

Betts, K

Burbank, MB

Cheyne, D

Cheung, T

Govorkov, S

Haid, G

Haid, V

Hunter, C

Kubik, PR

Lee, S

McKay, J

Reichl, E

Schroyen, C

Sekachev, I

Spear, P

Taylor, B

Tillotson, M

Sutherling, W

机构：

[1] CTF Syst Inc, Port Coquitlam, BC, Canada

[2] Epilepsy & Brain Mapping Ctr, Pasadena, CA USA

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1999年 / 9卷 / 02期

关键词：

D O I：

10.1109/77.783919

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：

This paper will describe features and performance of low-Tc whole-cortex MEG systems which utilise synthetic gradiometers to achieve a high level of environmental noise cancellation (MEG = magneto-encephalography). The near field MEG sensitivities achieved through use of synthetic gradiometers typically range from 3 to 7 fT/root Hz above 1 Hz in moderately shielded rooms and less than 10 fT/root Hz above a few Hz in open environments. This performance has been observed for fixed vertical and also adjustable MEG systems which can tilt between vertical and horizontal orientations.

引用

页码：4063 / 4068

页数：6

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