1. Near-infrared spectroscopy as an index of brain and tissue oxygenation
J.M. Murkin, M. Arango 
British Journal of Anaesthesia 
Volume 103, Pages i3-i13 (December 2009)
DOI: /bja/aep299
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions

2. Fig 1
Absorption spectra for oxygenated haemoglobin (HbO2), deoxygenated haemoglobin (Hb), Caa3, melanin, and water (H2O) over wavelengths in NIR range. Note the relatively low peak for Caa3. Commercial cerebral NIRS devices currently utilize wavelengths in the 700–850 nm range to maximize separation between Hb and HbO2. The presence of melanin as found in human hair can significantly attenuate Hb, HbO2, and Caa3 signals.
British Journal of Anaesthesia  , i3-i13DOI: ( /bja/aep299)
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions

3. Fig 2
Proposed algorithm in the use of brain oximetry. CT, computed tomography; ICHT, intra-cranial hypertension; MAP, mean arterial pressure; MRI, magnetic resonance imaging. Reprinted from Denault and colleagues,16 with permission from SAGE Publications Inc.
British Journal of Anaesthesia  , i3-i13DOI: ( /bja/aep299)
Copyright © 2009 British Journal of Anaesthesia Terms and Conditions