Novel measure for the calibration of laser Doppler flowmetry devices

Andrey V. Dunaev, Evgeny A. Zherebtsov, Dmitrii A. Rogatkin, Neil A. Stewart, Sergei G. Sokolovski, Edik U. Rafailov

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

Abstract

The metrological basis for optical non-invasive diagnostic devices is an unresolved issue. A major challenge for laser Doppler flowmetry (LDF) is the need to compare the outputs from individual devices and various manufacturers to identify variations useful in clinical diagnostics. The most common methods for instrument calibration are simulants or phantoms composed of colloids of light-scattering particles which simulate the motion of red blood cells based on Brownian motion. However, such systems have limited accuracy or stability and cannot calibrate for the known rhythmic components of perfusion (0.0095-1.6 Hz). To solve this problem, we propose the design of a novel technique based on the simulation of moving particles using an electromechanical transducer, in which a precision piezoelectric actuator is used (e.g., P-602.8SL with maximum movement less than 1 mm). In this system, Doppler shift is generated in the layered structure of different solid materials with different optical light diffusing properties. This comprises a fixed, light transparent upper plane-parallel plate and an oscillating fluoroplastic (PTFE) disk. Preliminary studies on this experimental setup using the LDF-channel of a "LAKK-M" system demonstrated the detection of the linear portion (0-10 Hz with a maximum signal corresponding to Doppler shift of about 20 kHz) of the LDF-signal from the oscillating frequency of the moving layer. The results suggest the possibility of applying this technique for the calibration of LDF devices.

Original languageEnglish
Title of host publicationDesign and Quality for Biomedical Technologies VII
PublisherSPIE
Volume8936
ISBN (Print)9780819498496
DOIs
Publication statusPublished - 1 Jan 2014
EventDesign and Quality for Biomedical Technologies VII - San Francisco, CA, United States
Duration: 1 Feb 20142 Feb 2014

Conference

ConferenceDesign and Quality for Biomedical Technologies VII
CountryUnited States
CitySan Francisco, CA
Period1/02/142/02/14

Bibliographical note

© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).

Keywords

  • Biotissue phantom
  • Calibration
  • Laser Doppler flowmetry
  • Measure
  • Metrological support

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    Dunaev, A. V., Zherebtsov, E. A., Rogatkin, D. A., Stewart, N. A., Sokolovski, S. G., & Rafailov, E. U. (2014). Novel measure for the calibration of laser Doppler flowmetry devices. In Design and Quality for Biomedical Technologies VII (Vol. 8936). [89360D] SPIE. https://doi.org/10.1117/12.2035651