Wavelet signal extraction using an oximetry based perfusion sensor

Seungjoon Lee, Bennet L. Ibey, Mark A. Wilson, M. Nance Ericson, Gerard L. Cote

Research output: Contribution to journalConference articlepeer-review

Abstract

A sensor has been developed that uses multiple source excitation to measure blood perfusion in transplanted organs. To better isolate the signal of interest, wavelet decomposition analysis was used and compared to Fast Fourier Transform analysis. Data was collected in vitro using an adjustable peristaltic perfusion system and compared to simulated data created using low frequency sine waves. Standard FFT analysis and wavelet decomposition, using the symlet-4 wavelet mother function, was performed on both sets of data. The results showed that wavelet analysis was more suitable than FFT to extract the semi-periodic perfusion signal These results indicate the potential of wavelet analysis for blood perfusion monitoring.

Original languageEnglish
Pages (from-to)44-50
Number of pages7
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5325
DOIs
StatePublished - 2004
EventOptical Diagnostics and Sensing IV - San Jose, CA, United States
Duration: Jan 27 2004Jan 27 2004

Keywords

  • DWT
  • FFT
  • Perfusion
  • Pulse oximeter
  • Transplant organ
  • Wavelet

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