Measurements of the magnetocardiography in unshielded environment using high-T-c rf SQUID gradiometer

Authors
He, DF Zhang, F Xie, FX Dai, YD Wang, SG Ma, P Yang, T Wang, SZ Chen, WC Wang, ZQ
Citation
Df. He et al., Measurements of the magnetocardiography in unshielded environment using high-T-c rf SQUID gradiometer, PHYSICA C, 341, 2000, pp. 2635-2636
Citations number
7
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
341
Year of publication
2000
Part
4
Pages
2635 - 2636
Database
ISI
SICI code
0921-4534(200011)341:<2635:MOTMIU>2.0.ZU;2-#
Abstract
We recorded the 9-point magnetocardiography (MCG) of a normal person in an unshielded environment by using a first-order gradiometer made by subtracti ng the outputs of two high-T-c YBGO rf SQUID magnetometers. A compensation method was used to cancel the 50Hz line interference. After data processing and averaging, the fine structures of the heart signal (P-wave, Q,R,S-comp lex, T-wave) could be seen clearly and a SNR of 120 could be obtained.