TY - GEN
T1 - Assessment on self-mixing laser interferometry for blood flow measurement over skin surface
AU - Ozdemir, Sahin Kaya
AU - Ohno, Isao
AU - Shinohara, Shigenobu
PY - 2006
Y1 - 2006
N2 - We study self-mixing laser diode (SM-LD) as a low-cost and compact optical sensor for non-invasive blood flow measurement and profiling over the skin surface. By making in-vivo and in-vitro measurements, we compare the SM-LD based sensor with the commercially available flowmeters to assess the accuracy and feasibility of SM-LD sensors for such applications. For the SM-LD based sensor, we apply two different signal processing methods (i) counting the intensity fluctuations of the signal from the SM-LD to obtain a frequency value, and (ii) the autocorrelation of the signal. In-vitro measurements show good agreement with the commercially available flowmeters. In-vivo measurements performed on test subjects revealed that autocorrelation technique shows much better results than the counting technique in blood flow profiling and SM-LD based sensor suffers from errors caused by external artifacts during measurements.
AB - We study self-mixing laser diode (SM-LD) as a low-cost and compact optical sensor for non-invasive blood flow measurement and profiling over the skin surface. By making in-vivo and in-vitro measurements, we compare the SM-LD based sensor with the commercially available flowmeters to assess the accuracy and feasibility of SM-LD sensors for such applications. For the SM-LD based sensor, we apply two different signal processing methods (i) counting the intensity fluctuations of the signal from the SM-LD to obtain a frequency value, and (ii) the autocorrelation of the signal. In-vitro measurements show good agreement with the commercially available flowmeters. In-vivo measurements performed on test subjects revealed that autocorrelation technique shows much better results than the counting technique in blood flow profiling and SM-LD based sensor suffers from errors caused by external artifacts during measurements.
UR - http://www.scopus.com/inward/record.url?scp=36048960160&partnerID=8YFLogxK
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U2 - 10.1109/IMTC.2006.235496
DO - 10.1109/IMTC.2006.235496
M3 - Conference contribution
AN - SCOPUS:36048960160
SN - 0780393600
SN - 9780780393608
T3 - Conference Record - IEEE Instrumentation and Measurement Technology Conference
SP - 27
EP - 31
BT - IMTC'06 - Proceedings of the IEEE Instrumentation and Measurement Technology Conference
T2 - IMTC'06 - IEEE Instrumentation and Measurement Technology Conference
Y2 - 24 April 2006 through 27 April 2006
ER -