Two-dimensional propagation of magnetocardiac T wave signals for characterizing myocardial ischemia
Journal
APPLIED PHYSICS LETTERS
Journal Volume
92
Journal Issue
19
Pages
194104
Date Issued
2008-09-02
Author(s)
Lin, LC
Tsai, MC
Gao, YL
Yang, SY
Horng, HE
Yang, HC
Tseng, WK
Lee, TL
Hsuan, CF
Pan, YF
Lee, YH
Abstract
Instead of detecting electrical signals for diagnosing cardiac abnormalities, a promising alternative is to detect the magnetic signals generated from cardiac electrical currents. The system utilizing 64 low-transitionerature superconducting quantum interference devices was tested to detect the time-dependent magnetocardiac signals that are spatially distributed over the heart. To achieve efficient acquisition and analysis, we propose a method to detect two-dimensionally, the T wave propagation of electromagnetic signals of beating hearts. In addition to characterizing the propagating behaviors, the differences between normal hearts and those with coronary artery disease were investigated. © 2008 American Institute of Physics.
Subjects
quantum interference device
SQUID-MAGNETOMETER
system
GRADIOMETER
SDGs
Publisher
AMER INST PHYSICS
Type
journal article