Phase measurement of light absorption and scatter in human tissue

  title={Phase measurement of light absorption and scatter in human tissue},
  author={B. Chancea and Mark Cope and Enrico Gratton and Nirmala Ramanujam},
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 ( ma) and scattering ( ms8) 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… CONTINUE READING
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