Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2011-06-21
2011-06-21
Bertram, Eric D. (Department: 3766)
Surgery
Diagnostic testing
Cardiovascular
Reexamination Certificate
active
07966061
ABSTRACT:
Described herein is a method of developing a fuzzy logic system to detect a non-normal health condition. In particular, signal processing and transformation of electrocardiogram (EKG) signals for sleep disorder breathing are provided. The method includes: recording EKG measurements during sleep; clipping the measurements into clips of a consistent length; calculating heart rate and obtaining an evenly sampled discrete time series data clip; performing Short-Time Discrete Fourier Transform on each data clip generating STDFT respective matrices; encoding each STDFT matrix into a grey-level image; calculating Grey-Level Co-occurrence Matrices; extracting textural features; performing statistical analysis on the features to formulate rules; and employing the rules in a Fuzzy Logic system. The system and method described herein yields an accuracy of 75.88%, or better, in detection of sleep apnea.
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Al-Abed Mohammad A.
Behbehani Khosrow
Manry Michael T.
Bertram Eric D.
Board of Regents , The University of Texas System
Fulbright & Jaworski L.L.P.
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