Novel measure for the calibration of laser Doppler flowmetry devices


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.

Publication DOI:
Divisions: College of Engineering & Physical Sciences
College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
Additional Information: © (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).
Event Title: Design and Quality for Biomedical Technologies VII
Event Type: Other
Event Dates: 2014-02-01 - 2014-02-02
Uncontrolled Keywords: Biotissue phantom,Calibration,Laser Doppler flowmetry,Measure,Metrological support,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials,Biomaterials,Radiology Nuclear Medicine and imaging
ISBN: 9780819498496
Last Modified: 20 May 2024 07:49
Date Deposited: 16 Oct 2019 15:10
Full Text Link:
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Conference contribution
Published Date: 2014-01-01
Authors: Dunaev, Andrey V.
Zherebtsov, Evgeny A. (ORCID Profile 0000-0002-3635-1430)
Rogatkin, Dmitrii A.
Stewart, Neil A.
Sokolovski, Sergei G. (ORCID Profile 0000-0001-7445-7204)
Rafailov, Edik U. (ORCID Profile 0000-0002-4152-0120)



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