Analysis of gases

摘要

Systems and techniques for the analysis of gases for medical purposes are described. In one aspect, a system includes a sample collector to collect a physical sample associated with an individual and present a gas sample for analysis, a gas analysis device to analyze the gas sample presented by the sample collector to determine a concentration of one or more non-aqueous gases in the gas sample, a data storage device that includes information reflecting a correlation between concentration of the one or more non-aqueous gases in the gas sample and a disease state, and a data analysis device to determine a medical condition of the individual based on the concentration of one or more non-aqueous gases in the gas sample and the information.

主权项

1. A method comprising:
using photoacoustic spectroscopy to determine data describing infrared absorption at a collection of wavelengths of a gas sample taken from an individual; based on the data describing the infrared absorption, determining measurements of concentrations of a plurality of different non-aqueous species in the gas sample taken from the individual; receiving, by a data processing device, the measurements of concentrations of the plurality of different non-aqueous species in the gas sample taken from the individual; correlating, by the data processing device, the concentration measurements with a medical condition of the individual; and making a result of the correlation available over an output device of the data processing device, wherein analysis information is used, by the data processing device, in conjunction with concentration measurement results to characterize a medical condition of the individual, the analysis information including generalized information, the generalized information reflecting a correlation between concentrations of the non-aqueous species in gas samples associated with a population of individuals and a medical condition of the population, wherein the concentrations of the non-aqueous species in gas samples is compared, by the data processing device, with the generalized information until sufficient gas samples have been taken and analyzed to assemble a statistically useful database of individualized information for a given individual, and comparing the concentrations of the non-aqueous species also with the individualized information once such a database has been assembled.