Potential of Laser Doppler Flowmetry in the Medical Needle Insertion Procedures

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Date
2019-10-07
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Language
en
Pages
4
71-74
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Proceedings of the 41th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2019, Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Abstract
Medical needle insertion procedures possess the risk of life-threatening blood vessel rapture. Here we report a compact laser Doppler Flowmetry (LDF) based system that has a potential of blood vessel detection in the vicinity of the moving needle. The developed LDF system comprises two optical fibers inserted into the needle (the probe), a laser unit and a photodetector. The latter collects the signal produced by photons, scattered from the moving red blood cells, that is further converted into perfusion value. Using LDF system, we have been able to detect the flow independently from the needle penetration angle, site or depth. Moreover, we showed that the blood vessel can be identified inside the tissue phantom while the probe is moving. Our results demonstrate that the developed LDF system is flexible and compatible with different types of needles and thus has a potential in the needle insertion procedures.
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Keywords
Physiological monitoring, Instrumentation, Optical and photonic sensors and systems, Sensor systems and instrumentation
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Citation
Kravtcova , A & Zhou , Q 2019 , Potential of Laser Doppler Flowmetry in the Medical Needle Insertion Procedures . in Proceedings of the 41th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2019 . Annual International Conference of the IEEE Engineering in Medicine and Biology Society , IEEE , pp. 71-74 , Annual International Conference of the IEEE Engineering in Medicine and Biology Society , Berlin , Germany , 23/07/2019 . https://doi.org/10.1109/EMBC.2019.8857324