Contactless recording of cardiac related thoracic conductivity changes
作者： R. Guardo , S. Trudelle , A. Adler , C. Boulay , P. Savard
DOI: 10.1109/IEMBS.1995.579839
关键词:
摘要: Cardiac related changes in the electrical conductivity distribution of thorax were recorded real-time with an electromagnetic sensor consisting a 3.5 cm radius coil, 4 MHz oscillator and active RF voltmeter. Operation is based on measuring amplitude marginal oscillator, caused by eddy current losses heart region. Signals from 6 normal subjects multiple sessions (1 hour to 1 month) showed good repeatability. The average SNR for signals coil placed over sternum was 34 dB. A possible application this type non-invasive continuous assessment left ventricular ejection fraction.
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