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 language | English |
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Pages (from-to) | 44-50 |
Number of pages | 7 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 5325 |
DOIs | |
State | Published - 2004 |
Event | Optical Diagnostics and Sensing IV - San Jose, CA, United States Duration: Jan 27 2004 → Jan 27 2004 |
Keywords
- DWT
- FFT
- Perfusion
- Pulse oximeter
- Transplant organ
- Wavelet