Monitoring Cerebral perfusion using near infrared spectroscopy and laser doppler flowmetry

Klaessens, J.H.G.M. and Kolkman, R.G.M. and Hopman, J.C.W. and Hondebrink, E. and Liem, K.D. and Steenbergen, W. and Mul de, F.F.M. and Thijssen, J.M. (2003) Monitoring Cerebral perfusion using near infrared spectroscopy and laser doppler flowmetry. Physiological Measurement, 24 . N35-N40. ISSN 0967-3334

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Abstract:	This paper describes the simultaneous use of two, noninvasive, near-infrared techniques near-infrared spectroscopy (NIRS) and a continuous wave NIR laser Doppler flow system (LDF) to measure changes in the blood oxygenation, blood concentration and blood flow velocity in the brain. A piglet was used as animal model. A controlled change in the arterial CO2 pressure (PaCO2) was applied for achieving changes in the listed cerebrovascular parameters. The time courses of blood concentration parameters (NIRS) and RMS blood flow velocity (LDF) were found to correspond closely with those of carotid blood flow and arterial carbon dioxide pressure (PaCO2). This result shows the additional value of LDF when combined with NIRS, preferably in one instrument. Development of pulsed LDF for regional blood flow measurement is indicated.
Item Type:	Article
Copyright:	© Institute of Physics and IOP Publishing Limited 2003
Faculty:	Science and Technology (TNW)
Research Group:	Biomedical Photonic Imaging (BMPI)
Link to this item:	http://purl.utwente.nl/publications/40564
Official URL:	http://dx.doi.org/10.1088/0967-3334/24/4/N03
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