Non-invasive method and system for characterizing cardiovascular systems
First Claim
1. A system for localizing and characterizing an architectural feature and/or a function of cardiovascular tissue, the system comprising:
- one or more processors; and
a memory having instructions stored thereon, wherein execution of the instructions by the one or more processors causes the one or more processors to;
obtain a data set associated with at least one measured physiological signal associated with the tissue;
process data within the obtained data set to display, in an image of a three-dimensional representation of the tissue, at least one abnormality associated with the tissue by;
creating a phase space diagram based on the data;
dividing the phase space diagram into a plurality of regions; and
computing one or more space-time density values associated with each region,wherein the one or more space-time density values contain information about non-linear variability of the at least one physiological signal; and
link, via one or more learning algorithms, one or more nonlinear nested sinusoidal Gaussian equations to a plurality of locations associated with the tissue based on the one or more space-time density values, each location of the plurality of locations being associated with an architectural feature and/or a function of the tissue to display the at least one abnormality in the image of the three-dimensional representation of the tissue.
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Abstract
The present disclosure uses physiological data, ECG signals as an example, to evaluate cardiac structure and function in mammals. Two approaches are presented, e.g., a model-based analysis and a space-time analysis. The first method uses a modified Matching Pursuit (MMP) algorithm to find a noiseless model of the ECG data that is sparse and does not assume periodicity of the signal. After the model is derived, various metrics and subspaces are extracted to image and characterize cardiovascular tissues using complex-sub-harmonic-frequencies (CSF) quasi-periodic and other mathematical methods. In the second method, space-time domain is divided into a number of regions, the density of the ECG signal is computed in each region and inputted into a learning algorithm to image and characterize the tissues.
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Citations
24 Claims
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1. A system for localizing and characterizing an architectural feature and/or a function of cardiovascular tissue, the system comprising:
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one or more processors; and a memory having instructions stored thereon, wherein execution of the instructions by the one or more processors causes the one or more processors to; obtain a data set associated with at least one measured physiological signal associated with the tissue; process data within the obtained data set to display, in an image of a three-dimensional representation of the tissue, at least one abnormality associated with the tissue by; creating a phase space diagram based on the data; dividing the phase space diagram into a plurality of regions; and computing one or more space-time density values associated with each region, wherein the one or more space-time density values contain information about non-linear variability of the at least one physiological signal; and link, via one or more learning algorithms, one or more nonlinear nested sinusoidal Gaussian equations to a plurality of locations associated with the tissue based on the one or more space-time density values, each location of the plurality of locations being associated with an architectural feature and/or a function of the tissue to display the at least one abnormality in the image of the three-dimensional representation of the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A non-transitory computer readable medium having instructions stored thereon, wherein execution of the instructions by one or more processors causes the one or more processors to:
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obtain a data set associated with at least one measured physiological signal associated with a tissue; process data within the obtained data set to display, in an image of a three-dimensional representation of the tissue, at least one abnormality associated with the tissue by; creating a phase space diagram based on the data; dividing the phase space diagram into a plurality of regions; and computing one or more space-time density values associated with each region, wherein the one or more space-time density values contain information about non-linear variability of the at least one physiological signal; and link, via one or more learning algorithms, one or more nonlinear nested sinusoidal Gaussian equations to a plurality of locations associated with the tissue based on the one or more space-time density values, each location of the plurality of locations being associated with an architectural feature and/or a function of the tissue to display the at least one abnormality in the image of the three-dimensional representation of the tissue.
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24. A system comprising:
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a plurality of orthogonal leads configured to non-invasively acquire at least one physiological signal from a mammal, wherein the at least one physiological signal is used in analysis to localize and characterize an architectural feature and/or a function of cardiovascular tissue, wherein the analysis comprises; processing data within the obtained data set to display, in an image of a three-dimensional representation of the tissue, at least one abnormality associated with the tissue by; creating a phase space diagram based on data within the obtained data set; dividing the phase space diagram into a plurality of regions; and computing one or more space-time density values associated with each region, wherein the one or more space-time density values contain information about non-linear variability of the at least one physiological signal; and linking, via one or more learning algorithms, one or more nonlinear nested sinusoidal Gaussian equations to a plurality of locations associated with the tissue based on the one or more space-time density values, each location of the plurality of locations being associated with an architectural feature and/or a function of the tissue to display the at least one abnormality in the image of the three-dimensional representation of the tissue.
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Specification