About: Time-Frequency Analysis of Electrocardiograms

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The paper deals with time-frequency analysis of ECG signals using wavelet transform (WT). WT is applied to detect electrophysiological changes in ischemic heart. Reasons of WT implementation are justified. WT is defined and possibilities of its representation are shown. An algorithm for detection of ECG signal components using a contour envelope is designed in the experimental part of the paper. Properties of WT are further documented on a method of detection of electrophysiological changes in ischemic heart. Electrical activity of isolated hearts (n=11) in Langendorff experiment was recorded during induced acute ischemia. Recordings were analysed using measurement of shifts in phase time-frequency spectra. The results show that myocardial ischemia can be reliably detected within one minute after coronary artery occlusion under experimental conditions. The paper deals with time-frequency analysis of ECG signals using wavelet transform (WT). WT is applied to detect electrophysiological changes in ischemic heart. Reasons of WT implementation are justified. WT is defined and possibilities of its representation are shown. An algorithm for detection of ECG signal components using a contour envelope is designed in the experimental part of the paper. Properties of WT are further documented on a method of detection of electrophysiological changes in ischemic heart. Electrical activity of isolated hearts (n=11) in Langendorff experiment was recorded during induced acute ischemia. Recordings were analysed using measurement of shifts in phase time-frequency spectra. The results show that myocardial ischemia can be reliably detected within one minute after coronary artery occlusion under experimental conditions. (en)
Title	Time-Frequency Analysis of Electrocardiograms Time-Frequency Analysis of Electrocardiograms (en)
skos:prefLabel	Time-Frequency Analysis of Electrocardiograms Time-Frequency Analysis of Electrocardiograms (en)
skos:notation	RIV/00216305:26220/03:PU36589!RIV11-MSM-26220___
http://linked.open...avai/riv/aktivita	P V Z
http://linked.open...avai/riv/aktivity	P(GA102/01/1494), V, Z(MSM 262200011), Z(MSM 262200022)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Kolářová, Jana Provazník, Ivo Kozumplík, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoké učení technické v Brně / Fakulta elektrotechniky a komunikačních technologií
http://linked.open...dnocenehoVysledku	631054
http://linked.open...ai/riv/idVysledku	RIV/00216305:26220/03:PU36589
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	wavelet transform, time-frequency analysis, signal detection, ECG signal, isolated heart, myocardial ischemia (en)
http://linked.open.../riv/klicoveSlovo	wavelet transform time-frequency analysis ECG signal myocardial ischemia isolated heart signal detection
http://linked.open...odStatuVydavatele	CZ - Česká republika
http://linked.open...ontrolniKodProRIV	[C0D5259730D0]
http://linked.open...i/riv/nazevZdroje	Lékař a technika
http://linked.open...in/vavai/riv/obor	JD
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Optical recording of action potentials and its application in cardiology
http://linked.open...UplatneniVysledku	2003
http://linked.open...v/svazekPeriodika	34
http://linked.open...iv/tvurceVysledku	Kolářová, Jana Nováková, Zuzana Provazník, Ivo Nováková, Marie Kozumplík, Jiří
http://linked.open...n/vavai/riv/zamer	http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20262200011 http://linked.opendata.cz/resource/domain/vavai/zamer/MSM%20262200022
issn	0301-5491
number of pages	8 (xsd:int)
http://localhost/t...ganizacniJednotka	26220

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