Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
505977 | Computers in Biology and Medicine | 2006 | 17 Pages |
Abstract
New filtering algorithms; a modified scaled Fourier linear combiner (mSFLC) and a modified ensemble averaging (mEA) are proposed to remove the phase distortion of the impedance waveform caused by SFLC. Performance of the filters is assessed from the shape of the filtered waveform and the estimation of systolic time intervals. It was found that the mSFLC and mEA could compensate for drawbacks of the SFLC and precisely reproduce the impedance waveforms; however, misinterpretation and attenuation in the cardiac variables may be caused when abrupt changes or irregularities occur in the source waveform.
Related Topics
Physical Sciences and Engineering
Computer Science
Computer Science Applications
Authors
Toshimichi Ishiguro, Akihito Umezu, Yoshifumi Yasuda, Satoshi Horihata, Allan Kardec Barros,