Assessment on self-mixing laser interferometry for blood flow measurement over skin surface

Sahin Kaya Ozdemir, Isao Ohno, Shigenobu Shinohara

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations

Abstract

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.

Original languageEnglish (US)
Title of host publicationIMTC'06 - Proceedings of the IEEE Instrumentation and Measurement Technology Conference
Pages27-31
Number of pages5
DOIs
StatePublished - 2006
EventIMTC'06 - IEEE Instrumentation and Measurement Technology Conference - Sorrento, Italy
Duration: Apr 24 2006Apr 27 2006

Publication series

NameConference Record - IEEE Instrumentation and Measurement Technology Conference
ISSN (Print)1091-5281

Other

OtherIMTC'06 - IEEE Instrumentation and Measurement Technology Conference
CountryItaly
CitySorrento
Period4/24/064/27/06

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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