Title :
An advanced signal processing technique for impedance cardiography
Author :
Xiang Wang ; Sun, H.H. ; Van de Water, J.M.
Author_Institution :
Renaissance Technol. Inc., Newton, PA, USA
Abstract :
A new design using the latest technique in signal processing, the time-frequency analysis method, was developed to process impedance cardiography signals. This technique, when used to determine the relevant calculation parameters, was found to be more accurate than conventional methods. It was shown to be advantageous in reducing ventilation artifacts and motion noise, resulting in greater accuracy. Its cardiac output values had a much better correlation coefficient when compared in the clinical setting to the standard thermodilution technique than did the values from conventional impedance cardiography devices.
Keywords :
cardiology; electric impedance imaging; medical signal processing; time-frequency analysis; advanced signal processing technique; calculation parameters; cardiac output values; correlation coefficient; impedance cardiography signals; motion noise; time-frequency analysis method; ventilation artifacts; Biomedical signal processing; Cardiography; Electrodes; Impedance; Signal design; Signal processing; Sun; Thorax; Time frequency analysis; Ventilation; Cardiography, Impedance; Electrodes; Equipment Design; Humans; Signal Processing, Computer-Assisted;
Journal_Title :
Biomedical Engineering, IEEE Transactions on