Fig. 2.

Tissue temperature estimation procedure. (a) Breast tissue absorption spectrum (from areola); (b) Spectrum after removal of the contributions of all chromophores except water (dashed blue) and after subsequent normalization (solid red); (c) Normalized tissue water spectrum before (solid red) and after (dashed blue) bound-water-correction by blue-shifting; (d) Fit of a pure water spectrum to the “bound-water-corrected tissue water spectrum.”