The development of a high-T-c magnetocardiography system for unshielded environment

被引：23

作者：

David, B

Dossel, O

Doormann, V

Eckart, R

Hoppe, W

Kruger, J

Laudan, H

Rabe, G

机构：

[1] Research Laboratories, Department Technical Systems Hamburg, D-22335 Hamburg

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 1997年 / 7卷 / 02期

关键词：

D O I：

10.1109/77.622047

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 modular, 9-channel high-T-c SQUID system for magnetocardiography (MCG) was developed and tested in unshielded environment. Galvanically-coupled magnetometers made from Y-Ba-Cu-O films, with intrinsic white noise levels as low as 70 fT/root Hz, are used as SQUID sensors. In unshielded environment, a noise level of about 1 pT/root Hz for each channel was achieved using an active noise compensation system. A new digital planar gradiometer is proposed. First magnetocardiograms recorded in unshielded environment are presented.

引用

收藏

页码：3267 / 3270

页数：4

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