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Photoplethysmography device for detection of changes in the vasomotor parameters of small laboratory animals

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Abstract

A device for observation of changes in vasomotor parameters of small laboratory animals with limited blood amount has been developed. The device contains cw laser sources (635 nm, 650nm or 980 nm), photodetector, amplifier of the absorption photoplethysmography signal and special software for data recording. Use of pigtailed laser diode with optical fibre output allows avoiding thermal influence on the blood flow. Another advantage of the device is the possibility to record the received signal indirectly via the optical fibre to photodiode, or directly to photodiode. The described design allows to investigate the influence of magnetic fields in combination with optical microscopy, in particular -to record the changes of blood flow in a single vessel or in tissue with relatively small blood volume.

Original languageEnglish
Title of host publication14th Nordic-Baltic Conference on Biomedical Engineering and Medical Physics, NBC 2008
PublisherSpringer Verlag
Pages386-389
Number of pages4
ISBN (Print)9783540693666
DOIs
Publication statusPublished - 2008

Publication series

NameIFMBE Proceedings
Volume20 IFMBE
ISSN (Print)1680-0737

Keywords

  • cardio-vascular assessment
  • optical bio-sensing
  • Photoplethysmography

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