scholarly journals Impact of blood volume changes within the human skin on the diffuse reflectance measurements in visible and NIR spectral ranges

2017 ◽  
Author(s):  
Evgeny Zherebtsov ◽  
Alexander Bykov ◽  
Alexey Popov ◽  
Alexander Doronin ◽  
Igor Meglinski
Keyword(s):  
Human Skin ◽  
Blood Volume ◽  
Diffuse Reflectance ◽  
Volume Changes ◽  
Spectral Ranges ◽  
Reflectance Measurements

Early MRI blood volume changes in constrictor muscles correlate with post-radiation dysphagia

2020 ◽  
Author(s):  
Michelle L. Mierzwa ◽  
Laila A. Gharzai ◽  
Pin Li ◽  
Joel R. Wilkie ◽  
Peter G. Hawkins ◽  
...  
Keyword(s):  
Blood Volume ◽  
Volume Changes ◽  
Post Radiation

scholarly journals Spectroscopy in heterogenous media and applications for bioprocess and environmental monitoring

2002 ◽  
Vol 4 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Frank Schael ◽  
Oliver Reich ◽  
Sonja Engelhard
Keyword(s):  
Diffuse Reflectance ◽  
Near Infrared ◽  
Transport Theory ◽  
Radiation Transport ◽  
Diffusion Theory ◽  
Nile Blue ◽  
Milk Powder ◽  
Photon Migration ◽  
Heterogenous Media ◽  
Reflectance Measurements

Diffuse reflectance measurements and photon migration studies with near infrared (NIR) diode lasers were employed to elucidate experimental methods for determining absorption and scattering coefficients and species concentrations in heterogenous media. Measurements were performed at a number of wavelengths utilizing several laser sources some of which were widely tunable. In order to establish the applicability of simple photon migration models derived from radiation transport theory and to check the experimental boundary conditions of our measurements, simple light scattering solutions (such as suspensions of titanium dioxide, latex particles, and solutions of milk powder) containing dyes (such as nile blue, isosulfan blue) were investigated. The results obtained from diffuse-reflectance studies at different sourcedetector distances were in accordance with predictions from simple photon diffusion theory. Applications of reflectance measurements for monitoring of cell growth during fermentation processes and forin-situinvestigations of soils are presented.

An Electronic Method of Detecting Blood Volume Changes

1965 ◽  
Vol 26 (2) ◽  
pp. 199-203 ◽  
Author(s):  
Rex J. Underwood ◽  
David Gowing
Keyword(s):  
Blood Volume ◽  
Volume Changes ◽  
Electronic Method
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