Direct Mathematical Method for Real-time Ischemic Detection from Electrocardiograms Using the Discrete Hermite Transform

Bibliographic Details
Main Author:	Arichi, Maiko
Language:	English
Published:	University of Akron / OhioLINK 2011
Subjects:	Biomedical Engineering Signal Processing Hermite Transform
Online Access:	http://rave.ohiolink.edu/etdc/view?acc_num=akron1313529081

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spelling	ndltd-OhioLink-oai-etd.ohiolink.edu-akron13135290812021-08-03T05:26:32Z Direct Mathematical Method for Real-time Ischemic Detection from Electrocardiograms Using the Discrete Hermite Transform Arichi, Maiko Biomedical Engineering Signal Processing Hermite Transform A real-time automated identification technique is developed for the detection of ischemic episodes in long term electrocardiographic (ECG) signals using mathematical expansions involving the Discrete Dilated Hermite Transform. The discrete Hermite functions are generated as eigenvectors of a symmetric tridiagonal matrix that commutes with the centered Fourier matrix. The Discrete Hermite Transform (DHmT) values are computed from a simple dot product between an individual ECG complex extracted from the European Society of Cardiology (ESC) ST-T database and the corresponding discrete Hermite function. These values are found to contain information about the ECG shape, highlighting changes between ST segment and T wave alterations which are the features of ischemic episodes. This information from the discrete Hermite transform, based on an orthonormal set of n-dimensional digital Hermite functions that serve as shape-identification functions, can be used to identify ischemic episodes from the ECG. The performance was analyzed in terms of sensitivity, specificity and positive predictive value. 2011-09-22 English text University of Akron / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=akron1313529081 http://rave.ohiolink.edu/etdc/view?acc_num=akron1313529081 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
collection	NDLTD
language	English
sources	NDLTD
topic	Biomedical Engineering Signal Processing Hermite Transform
spellingShingle	Biomedical Engineering Signal Processing Hermite Transform Arichi, Maiko Direct Mathematical Method for Real-time Ischemic Detection from Electrocardiograms Using the Discrete Hermite Transform
author	Arichi, Maiko
author_facet	Arichi, Maiko
author_sort	Arichi, Maiko
title	Direct Mathematical Method for Real-time Ischemic Detection from Electrocardiograms Using the Discrete Hermite Transform
title_short	Direct Mathematical Method for Real-time Ischemic Detection from Electrocardiograms Using the Discrete Hermite Transform
title_full	Direct Mathematical Method for Real-time Ischemic Detection from Electrocardiograms Using the Discrete Hermite Transform
title_fullStr	Direct Mathematical Method for Real-time Ischemic Detection from Electrocardiograms Using the Discrete Hermite Transform
title_full_unstemmed	Direct Mathematical Method for Real-time Ischemic Detection from Electrocardiograms Using the Discrete Hermite Transform
title_sort	direct mathematical method for real-time ischemic detection from electrocardiograms using the discrete hermite transform
publisher	University of Akron / OhioLINK
publishDate	2011
url	http://rave.ohiolink.edu/etdc/view?acc_num=akron1313529081
work_keys_str_mv	AT arichimaiko directmathematicalmethodforrealtimeischemicdetectionfromelectrocardiogramsusingthediscretehermitetransform
_version_	1719420181622554624

Direct Mathematical Method for Real-time Ischemic Detection from Electrocardiograms Using the Discrete Hermite Transform

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