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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 35, Iss. 19 — Jul. 1, 1996
  • pp: 3421–3425

Fiber-optic evanescent-wave spectroscopy for fast multicomponent analysis of human blood

Ronit Simhi, Yaron Gotshal, David Bunimovich, Ben-Ami Sela, and Abraham Katzir  »View Author Affiliations


Applied Optics, Vol. 35, Issue 19, pp. 3421-3425 (1996)
http://dx.doi.org/10.1364/AO.35.003421


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Abstract

A spectral analysis of human blood serum was undertaken by fiber-optic evanescent-wave spectroscopy (FEWS) by the use of a Fourier-transform infrared spectrometer. A special cell for the FEWS measurements was designed and built that incorporates an IR-transmitting silver halide fiber and a means for introducing the blood-serum sample. Further improvements in analysis were obtained by the adoption of multivariate calibration techniques that are already used in clinical chemistry. The partial least-squares algorithm was used to calculate the concentrations of cholesterol, total protein, urea, and uric acid in human blood serum. The estimated prediction errors obtained (in percent from the average value) were 6% for total protein, 15% for cholesterol, 30% for urea, and 30% for uric acid. These results were compared with another independent prediction method that used a neural-network model. This model yielded estimated prediction errors of 8.8% for total protein, 25% for cholesterol, and 21% for uric acid.

© 1996 Optical Society of America

History
Original Manuscript: September 27, 1995
Revised Manuscript: February 29, 1996
Published: July 1, 1996

Citation
Ronit Simhi, Yaron Gotshal, David Bunimovich, Ben-Ami Sela, and Abraham Katzir, "Fiber-optic evanescent-wave spectroscopy for fast multicomponent analysis of human blood," Appl. Opt. 35, 3421-3425 (1996)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-35-19-3421

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