Title
Integrated Optoelectronic Probe Including a Vertical Cavity Surface Emitting Laser for Laser Doppler Perfusion Monitoring
Author
Serov, A.N.
Nieland, J.
Oosterbaan, S.
Steenbergen, W.
Bekman, H.H.P.T.
de Mul, F.F.M.
van Kranenburg, H.
TNO Defensie en Veiligheid
Publication year
2006
Abstract
An integrated optoelectronic probe with small dimensions, for direct-contact laser Doppler blood flow monitoring has been realized. A vertical cavity surface emitting laser (VCSEL), and a chip with photodetectors and all necessary electronics are integrated in a miniature probe head connected to a laptop computer. The computer sound processor is utilized for acquisition and digital signal processing of the incoming Doppler signal. In this paper, the design of the laser Doppler perfusion monitor is described and its performance is evaluated. We demonstrate our perfusion monitor to be less sensitive to subject motion than a commercial fiber-optic device. For medium and high perfusion levels, the performance of our integrated probe is comparable to the fiberoptic flowmeter containing a normal edge-emitting laser diode. For very low perfusion levels, the signal-to-noise ratio of the fiber-optic device is higher. This difference can mainly be attributed to the shorter coherence length of the VCSEL compared with the edgeemitting laser diode.
Subject
Physics
Blood flow measurement
Doppler effect
Optoelectronic devices
Semiconductor lasers
Diagnosis, Computer-Assisted
Electronics, Medical
Equipment Design
Equipment Failure Analysis
Humans
Laser-Doppler Flowmetry
Optics
Reproducibility of Results
Sensitivity and Specificity
Systems Integration
Transducers
Semiconductor lasers
Doppler perfusion monitoring
Vertical cavity surface emitting laser (VCSEL)
Blood
Doppler effect
Fiber optics
Laptop computers
Light emitting diodes
To reference this document use:
http://resolver.tudelft.nl/uuid:d96a8798-c4d3-4e18-8de6-5fe94d153b9a
DOI
https://doi.org/10.1109/tbme.2006.877106
TNO identifier
224308
Source
IEEE Transactions on Biomedical Engineering, 53 (10), 2067-2074
Document type
article