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Monitoring Ischemic Changes in Electrocardiograms using Dickinson-Steiglitz Discrete Hermite Functions

Arichi, Maiko

Abstract Details

2005, Master of Science, University of Akron, Applied Mathematics.
Ischemic heart disease is one of the main common causes of death and an electrocardiogram (ECG) is used in the investigation of the heart disease. A method of real time detection of ischemic features from long term ECG signals based on Dickinson-Steiglitz discrete Hermite expansions is proposed. In this paper, the discrete Hermite functions were generated as eigenvectors of the extended tridiagonal matrix that commutes with the centered Fourier matrix. Each ECG complex was extracted from the long term ECG and expanded in terms of Hermite functions using a simple dot product. These coefficients were found to contain information about the shape of the corresponding ECG complex. The first 50 coefficients were used to reconstruct the ECG complex. These 50 coefficients were fed as input to train a committee Neural Network classifier to identify ST-segment and T-wave changes, which are one of the ischemic features in the ECG complex. The trained network was tested with long term ECG records from the MIT-BIH database. The performance was analyzed in terms of sensitivity and specificity. This results were compared with the ones that came from the same method used with a tridiagonal Hermite matrix (T matrix).
Dale Mugler (Advisor)

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Citations

  • Arichi, M. (2005). Monitoring Ischemic Changes in Electrocardiograms using Dickinson-Steiglitz Discrete Hermite Functions [Master's thesis, University of Akron]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=akron1126224628

    APA Style (7th edition)

  • Arichi, Maiko. Monitoring Ischemic Changes in Electrocardiograms using Dickinson-Steiglitz Discrete Hermite Functions. 2005. University of Akron, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=akron1126224628.

    MLA Style (8th edition)

  • Arichi, Maiko. "Monitoring Ischemic Changes in Electrocardiograms using Dickinson-Steiglitz Discrete Hermite Functions." Master's thesis, University of Akron, 2005. http://rave.ohiolink.edu/etdc/view?acc_num=akron1126224628

    Chicago Manual of Style (17th edition)