Simultaneous correction of the influence of skin color and fat on tissue spectroscopy by use of a two-distance fiber-optic probe and orthogonalization technique

UMMS Affiliation

Department of Anesthesiology



Document Type


Medical Subject Headings

Adipose Tissue; *Algorithms; Artifacts; Equipment Design; Equipment Failure Analysis; Fiber Optic Technology; Humans; Muscle, Skeletal; Optical Fibers; Phantoms, Imaging; Pilot Projects; Skin Pigmentation; Spectroscopy, Fourier Transform Infrared; Transducers


Anesthesiology | Optics


We have demonstrated simultaneous correction for the optical interference of skin and fat in tissue spectra by using a two-distance fiber-optic probe. We obtained the correction by orthogonalizing the spectra collected at a long source-detector distance (SD) to the spectra collected at a short SD and mapped to the long SD space. The method was validated in tissuelike three-layer phantoms as well as preliminarily in human tissue. After the correction, a partial-least-squares model of the phantoms showed enhanced prediction performance.

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Citation: Opt Lett. 2005 Sep 1;30(17):2269-71. DOI 10.1364/OL.30.002269

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