Detail publikačního výsledku

Detection of Myocardial Ischemia Using Hidden Markov Models

BARDOŇOVÁ, J., PROVAZNÍK, I., NOVÁKOVÁ, M.

Originální název

Detection of Myocardial Ischemia Using Hidden Markov Models

Anglický název

Detection of Myocardial Ischemia Using Hidden Markov Models

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

The paper deals with detection of myocardial ischemia by analysis of electrophysiological changes within QRS complexes of electrocardiograms (ECG). ECG signals were analysed by continuous wavelet transform (CWT). Time frequency spectra of QRS complexes were used as an input of a detection system based on hidden Markov models (HMMs). Parameters of the used HMMs were assessed to recommend their optimal values. The presented results show that HMM analysis of ECGs preprocessed by CWT can be used for early detection of myocardial ischemia. Eleven Langendorff perfused rabbit hearts were used to record training and test data to learn Markov models. An average value of resulting sensitivity and specificity of detection system was around 0.9 depending on parameter setting of the models.

Anglický abstrakt

The paper deals with detection of myocardial ischemia by analysis of electrophysiological changes within QRS complexes of electrocardiograms (ECG). ECG signals were analysed by continuous wavelet transform (CWT). Time frequency spectra of QRS complexes were used as an input of a detection system based on hidden Markov models (HMMs). Parameters of the used HMMs were assessed to recommend their optimal values. The presented results show that HMM analysis of ECGs preprocessed by CWT can be used for early detection of myocardial ischemia. Eleven Langendorff perfused rabbit hearts were used to record training and test data to learn Markov models. An average value of resulting sensitivity and specificity of detection system was around 0.9 depending on parameter setting of the models.

Klíčová slova

Myocardial ischemia, ECG signal, QRS complex, Wavelet transform, hidden Markov models

Klíčová slova v angličtině

Myocardial ischemia, ECG signal, QRS complex, Wavelet transform, hidden Markov models

Autoři

BARDOŇOVÁ, J., PROVAZNÍK, I., NOVÁKOVÁ, M.

Rok RIV

2011

Vydáno

01.09.2003

Nakladatel

IEEE

Místo

Cancun

Kniha

Proceedings of Annual International Conference IEEE EMBS 2003

Strany od

1

Strany počet

4

BibTex

@inproceedings{BUT7870,
  author="Jana {Kolářová} and Valentýna {Provazník} and Marie {Nováková}",
  title="Detection of Myocardial Ischemia Using Hidden Markov Models",
  booktitle="Proceedings of Annual International Conference IEEE EMBS 2003",
  year="2003",
  pages="4",
  publisher="IEEE",
  address="Cancun"
}