Gao, L and Elwell, CE and Kohl-Bareis, M and Gramer, M and Cooper, CE and Leung, TS and Tachtsidis, I (2011) Effects of assuming constant optical scattering on haemoglobin concentration measurements using NIRS during a Valsalva manoeuvre. In: UNSPECIFIED, ? - ?.
Full text not available from this repository.Abstract
Resolving for changes in concentration of tissue chromophores in the human adult brain with near-infrared spectroscopy has generally been based on the assumption that optical scattering and pathlength remain constant. We have used a novel hybrid optical spectrometer that combines multi-distance frequency and broadband systems to investigate the changes in scattering and pathlength during a Valsalva manoeuvre in 8 adult volunteers. Results show a significant increase in the reduced scattering coefficient of 17% at 790nm and 850nm in 4 volunteers during the peak of the Valsalva. However, these scattering changes do not appear to significantly affect the differential pathlength factor and the tissue haemoglobin concentration measurements. © 2011 Springer Science+Business Media, LLC.
Item Type: | Conference or Workshop Item (UNSPECIFIED) |
---|---|
Additional Information: | Published proceedings: Advances in Experimental Medicine and Biology |
Subjects: | Q Science > QH Natural history > QH301 Biology R Medicine > R Medicine (General) |
Divisions: | Faculty of Science and Health > Life Sciences, School of |
Depositing User: | Admin |
Date Deposited: | 04 Aug 2011 15:27 |
Last Modified: | 14 Oct 2019 17:19 |
URI: | http://repository.essex.ac.uk/id/eprint/373 |
Actions (login required)
![]() |
View Item |