Method and means for measurement of biochemical components

Details Method and means for measurement of biochemical components Method and means for measurement of biochemical components

1994-07-05

1997-05-27

Sykes, Angela D.

Surgery

Truss

Pad

356 39, A61B 500

Patent

active

056322739

ABSTRACT:
Biochemical components and changes in the components are measured by directing light of several wavelengths into a body at one location, sensing light at the wavelengths emerging from the body at a plurality of distances from the one location, and ascertaining biochemical component characteristics in the body as a function of variations, with respect to distance, of the logarithm of the ratio of the light sensed to the light directed into the body. The variations with respect to distance are in the form of the derivative and square of the derivatives of the logarithm.

REFERENCES:
patent: 4796636 (1989-01-01), Branstetter et al.
patent: 5057695 (1991-10-01), Hirao et al.
patent: 5277181 (1994-01-01), Mendelson et al.
patent: 5285783 (1994-02-01), Secker
patent: 5297548 (1994-03-01), Pologe
Jacques, S.L. "Time-Resolved Reflectance Spectroscopy in Turbic Tissue", IEEE Transactions in BME, vol. 36, pp. 1155-1161, 1989.

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