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Method and system for detection of physiological conditions

  • US 5,810,014 A
  • Filed: 03/25/1997
  • Issued: 09/22/1998
  • Est. Priority Date: 03/25/1997
  • Status: Expired due to Fees
First Claim
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1. A method of determining the presence or absence of physiological abnormalities in multichannel test data from a physiological sensor suite, said method comprising the steps of:

  • (a) processing truth data to create physiological condition detection filters, said step of creating said physiological condition detection filters further comprising the steps of;

    (i) extracting said truth data containing physiological information from a sensor suite;

    (ii) pre-processing said truth data;

    (iii) further processing said pre-processed data to obtain parameters of a multichannel state variable model to represent a physiological condition associated with said pre-processed data;

    (iv) forming physiological condition detection filters using said parameters of said state variable model; and

    (b) determining the presence or absence of physiological abnormalities in test data that represents an unknown physiological condition by processing said test data using said physiological condition detection filters, said step of determining the physiological condition associated with said test data further comprising the steps of;

    (i) extracting said test data containing physiological information from a sensor suite;

    (ii) pre-processing said test data;

    (iii) processing said pre-processed test data with a plurality of said physiological condition detection filters so as to provide output data residual sequences that are preferentially whitened when a said physiological condition detection filter processes said test data that corresponds to the condition represented by same said physiological condition detection filter,(iv) calculating statistical metrics for each said output data residual sequence output from each said physiological condition detection filter;

    (v) ascertaining the identity of the physiological condition represented by said test data by performing a diagnostic decision based on the plurality of said statistical metrics.

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