Method of processing noninvasive spectra
First Claim
Patent Images
1. A method for processing near-infrared tissue measurements to provide a calibration model for noninvasive estimation of a biological parameter, comprising the steps of:
- noninvasively collecting a set of spectra with an analyzer;
removing gross outliers from said spectra to yield outlier removed spectra;
processing said outlier removed spectra to yield enhanced spectra;
removing background interference from said enhanced spectra to yield background corrected spectra; and
generating a calibration model using said background corrected spectra,wherein said step of processing comprises the step of;
filtering said spectra with any of;
an infinite-impulse response filter; and
a finite-impulse response filterwherein said step of filtering comprises use of any of;
a low-pass filter; and
a high-pass filter, andwherein said high-pass filter comprises a break frequency determined via any of;
a harmonic analysis of net analysis signal; and
empirically through an exemplary set of data.
6 Assignments
0 Petitions
Accused Products
Abstract
This invention provides a method and apparatus that corrects for tissue related interference calibration and/or measurement of biological parameters noninvasively. The invention concerns such terms as outlier identification, filtering, spectral correction, and baseline subtraction steps that, when used together, provides for noninvasive measurement of biological parameters, such as glucose concentration.
-
Citations
14 Claims
-
1. A method for processing near-infrared tissue measurements to provide a calibration model for noninvasive estimation of a biological parameter, comprising the steps of:
-
noninvasively collecting a set of spectra with an analyzer; removing gross outliers from said spectra to yield outlier removed spectra; processing said outlier removed spectra to yield enhanced spectra; removing background interference from said enhanced spectra to yield background corrected spectra; and generating a calibration model using said background corrected spectra, wherein said step of processing comprises the step of; filtering said spectra with any of; an infinite-impulse response filter; and a finite-impulse response filter wherein said step of filtering comprises use of any of; a low-pass filter; and a high-pass filter, and wherein said high-pass filter comprises a break frequency determined via any of; a harmonic analysis of net analysis signal; and empirically through an exemplary set of data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
Specification