22 November 2000 Effect of subcutaneous arterial pulsation on determination of cerebral arterial oxygen saturation using NIRS
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Abstract
It is not known to what extent effects in extracerebral tissue influence non-invasive near infra-red optical measurement of cerebral arterial oxygenation saturation. Measurements were made at different positions on the forehead of six healthy adult male volunteers with arterial saturation near to 100%. The optical ratios between the pulse heights at different wavelengths were as expected from the spectral characteristics of hemoglobin, but showed an unacceptably large spread: the mean ratio between the 770 and 905 nm pulse heights was 0.69 (SD 0.08, range 0.50 - 0.95). We consider that this was due to pulsation of large extracranial arteries.
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Ralph J. F. Houston, Ralph J. F. Houston, Jan Menssen, Jan Menssen, Marco C. van der Sluijs, Marco C. van der Sluijs, Willy N.J.M. Colier, Willy N.J.M. Colier, Berend Oeseburg, Berend Oeseburg, } "Effect of subcutaneous arterial pulsation on determination of cerebral arterial oxygen saturation using NIRS", Proc. SPIE 4160, Photon Migration, Diffuse Spectroscopy, and Optical Coherence Tomography: Imaging and Functional Assessment, (22 November 2000); doi: 10.1117/12.407611; https://doi.org/10.1117/12.407611
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