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Patient signal analysis based on affine template matching

  • US 10,588,577 B2
  • Filed: 01/29/2015
  • Issued: 03/17/2020
  • Est. Priority Date: 01/29/2015
  • Status: Active Grant
First Claim
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1. A system for patient signal analysis, comprising:

  • a non-transitory memory device;

    a processor device in communication with the memory device; and

    a signal analysis unit stored in the memory device and operative with the processor device to perform steps includingreceiving hemodynamic patient signal data acquired from a patient,extracting a region of interest from the hemodynamic patient signal data,performing affine template matching of the region of interest with a baseline signal portion by performing an affine waveform transformation of the region of interest,determining one or more affine ratios based on the matched region of interest and the baseline signal portion, wherein each of the one or more affine ratios quantitatively characterizes a difference between the matched region of interest and the baseline signal portion, wherein the difference quantifies a cardiac pathology,wherein determining the one or more affine ratios comprises determining an affine amplitude ratio in response to time durations of the matched region of interest and the baseline signal portion being similar,wherein determining the one or more affine ratios comprises determining an affine timing ratio in response to amplitudes at a key point of the matched region of interest and the baseline signal portion being similar, andcontrolling a medical treatment device based at least in part on the one or more affine ratios.

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