Four-channel YBa2Cu3O7−y dc SQUID magnetometer for biomagnetic measurements
- 24 January 1994
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 64 (4) , 514-516
- https://doi.org/10.1063/1.111090
Abstract
A four‐channel YBa2Cu3O7−y thin film dc SQUID magnetometer was fabricated. Biomagnetic measurements were performed by using the four‐channel system at 77 K in a magnetically shielded room. We have successfully measured four‐channel magnetocardiac signals clearly in real‐time mode. The best magnetic field resolution of the four SQUIDs was 370 fT/Hz1/2 at 10 Hz and 200 fT/Hz1/2 in the white noise region.Keywords
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