MULTI CHANNEL DC SQUID SENSOR ARRAY FOR BIOMAGNETIC APPLICATIONS

被引：37

作者：

HOENIG, HE ^{[1
]}

DAALMANS, GM ^{[1
]}

BAR, L ^{[1
]}

BOMMEL, F ^{[1
]}

PAULUS, A ^{[1
]}

UHL, D ^{[1
]}

WEISSE, HJ ^{[1
]}

SCHNEIDER, S ^{[1
]}

SEIFERT, H ^{[1
]}

REICHENBERGER, H ^{[1
]}

ABRAHAMFUCHS, K ^{[1
]}

机构：

[1] SIEMENS AG,MED ENGN GRP,W-8520 ERLANGEN,GERMANY

来源：

IEEE TRANSACTIONS ON MAGNETICS | 1991年 / 27卷 / 02期

关键词：

D O I：

10.1109/20.133787

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 biomagnetic multichannel system for medical diagnosis of brain and heart "KRENIKON" has been developed. 37 axial 1st order gradiometers -manufactured as flexible superconducting printed circuits- are arranged in a circular flat array of 19 cm diameter. Additionally, 3 orthogonal magnetometers are provided. The DC SQUIDs are fabricated in all-Nb technology, ten on a chip. The sensor system is operated in a shielded room with two layers of soft magnetic material and one layer of Al. The every day noise level is 10 fT/Hz1/2 at frequencies above 10 Hz. Within 2 years of operation in a normal urban surrounding, useful clinical applications have been demonstrated (e.g. for epilepsy and heart arrhythmias). For the first time current sources of sporadic events causing epilepsy or ventricular extrasystoles have been localized from coherent recordings of complete biomagnetic field distributions with spacial resolution of some mm and temporal resolution of 1 ms.

引用

页码：2777 / 2785

页数：9