Analysis of dynamic changes in ECG signals during optical mapping by dynamic time warping

Author

Vyklicky, M. ; Bardonova, J. ; Provaznik, I. ; Novakova, M. ; Blaha, M. ; Kozumplik, J.

Author_Institution

Brno Univ. of Technol.

fYear

2005

fDate

25-28 Sept. 2005

Firstpage

543

Lastpage

546

Abstract

Voltage-sensitive dyes (VSDs) are used in touch-less recording of electrical activity from animal hearts. Previously, VSDs has been successfully used in myocardial ischemia studies. However, our previous Langendorff perfused heart experiments have suggested changes in ECG signals in time and time-frequency domain caused by application of VSD during optical mapping. Detailed analysis of changes is needed to reveal impact to particular fractions of a heart cycle. Dynamic time warping (DTW) is applied to P-Q segments, QRS complexes, and ST-T segments of selected consecutive heart cycles in each experiment period. An optimal path resulting from DTW based on minimum distance between the control segments (before the application of VSD) and segments recorded in next two experiment steps is computed

Keywords

bioelectric potentials; biomedical optical imaging; dyes; electrocardiography; medical signal processing; ECG signal analysis; Langendorff perfused heart experiment; P-Q segment; QRS complex; ST-T segment; VSD; animal heart; dynamic time warping; electrical activity; myocardial ischemia; optical mapping; time-frequency domain; touch-less recording; voltage-sensitive dyes; Animals; Electrocardiography; Heart; Ischemic pain; Myocardium; Optical recording; Signal analysis; Signal mapping; Time frequency analysis; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Cardiology, 2005

Conference_Location

Lyon

Print_ISBN

0-7803-9337-6

Type

conf

DOI

10.1109/CIC.2005.1588158

Filename

1588158