Wavelet signal extraction using an oximetry-based perfusion sensor

Seungjoon Lee; Bennett L. Ibey; Mark A. Wilson; M. Nance Ericson; Gerard L. Cote

doi:10.1117/12.529334

18 June 2004 Wavelet signal extraction using an oximetry-based perfusion sensor

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

Proceedings Volume 5325, Optical Diagnostics and Sensing IV; (2004) https://doi.org/10.1117/12.529334
Event: Biomedical Optics 2004, 2004, San Jose, CA, United States

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.

Citation Download Citation

Seungjoon Lee, Bennett L. Ibey, Mark A. Wilson, M. Nance Ericson, and Gerard L. Cote "Wavelet signal extraction using an oximetry-based perfusion sensor", Proc. SPIE 5325, Optical Diagnostics and Sensing IV, (18 June 2004); https://doi.org/10.1117/12.529334

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KEYWORDS

Wavelets

Sensors

Blood

In vivo imaging

Fourier transforms

Intestine

Optical diagnostics

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