Patent ID: 8750952
Filing Date: 2014-06-10
Classification: A61B,G01N

Abstract:
1. A method of dating a body sample comprising: taking a spectroscopic measurement of a host material; taking a series of spectroscopic measurements of the sample, each measurement in the series of spectroscopic measurements including at least two predetermined positions in a spectrum, the predetermined positions having spectral characteristics corresponding to two predetermined substances present in the sample that have a time varying relationship with each other, the measurements in the series of spectroscopic measurements being spaced in time; determining a concentration of each of the two predetermined substances present in the sample from each measurement in the series of the spectroscopic measurements at each point in time; determining a ratio of the concentrations of the two predetermined substances at each point in time; analyzing the ratios of the concentrations of the two predetermined substances over time to estimate when the concentrations of the two predetermined substances were at a limit of their concentrations, thereby providing an indication of the age of the sample; and wherein determining the concentrations of the two predetermined substances from the series of spectroscopic measurements comprises: