Phase measurement of light absorption and scatter in human tissue
B Chance, M Cope, E Gratton, N Ramanujam… - Review of scientific …, 1998 - pubs.aip.org
Analog and digital technologies are presented for precise measurement of propagation
delay of photons from source and detector placed on portions of the human body. The goal
of the apparatus design is to quantify absorption (μ a) and scattering (μ s′) induced by
biological pigments and biological structures, respectively. Body tissues are highly
scattering with a mean distance between scatterers of less than a mm (at 700–850 nm).
Significant absorption is mainly due to 5%–10% of the tissue volume occupied by blood …
delay of photons from source and detector placed on portions of the human body. The goal
of the apparatus design is to quantify absorption (μ a) and scattering (μ s′) induced by
biological pigments and biological structures, respectively. Body tissues are highly
scattering with a mean distance between scatterers of less than a mm (at 700–850 nm).
Significant absorption is mainly due to 5%–10% of the tissue volume occupied by blood …
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