Pulse Oximetry Deriving S(oxygen saturation value) using beers law?

Sn1

Aug 2014
2
0
Hey guys im having problems trying to derive this equation S(oxygen saturation value) = (E1r-BE2r)/(E1r-E1o+B(E2o-E2r)) using Beers Law I = Io x 10^-ecd . Any help would be greatly appreciated thanks!!
 
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