Temperature-dependent optical properties of Intralipid measured with frequency-domain photon-migration spectroscopy.
We present the temperature dependence of absorption and reduced scattering coefficients of 1.8% Intralipid measured by frequency-domain photon-migration spectroscopy between 710 and 850 nm. These measurements were made in the physiologically relevant 30 to 40 degrees C temperature range. The temperature coefficients for absorption were consistent during heating and cooling and follow closely other reported results. The change in absorption coefficient at 740 nm suggests that a minimum temperature change of 4 degrees C is observable within the error limits. We found that the reduced scattering coefficient shows a hysteresis with temperature at 740 nm. The temperature coefficient for reduced scattering determined from heating cycle measurements agrees with theory and other measurements within the error limits.
Cletus
Biju
B
The University of Waikato, Hamilton, New Zealand. bijucletus@hotmail.com
Künnemeyer
Rainer
R
Martinsen
Paul
P
McGlone
Vincent Andrew
VA
D005217:Fat Emulsions, Intravenous / Q000032:analysis / Q000737:chemistry*; D016018:Least-Squares Analysis; D008962:Models, Theoretical; D019047:Phantoms, Imaging; D017785:Photons; D012542:Scattering, Radiation; D013057:Spectrum Analysis / Q000379:methods*; D013696:Temperature
D005217:Fat Emulsions, Intravenous