Dipole modeling in electrocardiographic classification of acute ischemia

Author

Stenroos, M. ; Lindholm, M. ; Hänninen, H. ; Tierala, I. ; Väänänen, H. ; Katila, T.

Author_Institution

Lab. of Biomed. Eng., Helsinki Univ. of Technol.

fYear

2005

fDate

25-28 Sept. 2005

Firstpage

655

Lastpage

658

Abstract

Acute ischemia is commonly detected with electrocardiography. In diagnostic use 12-lead ECG is the standard setup, during monitoring reduced lead sets are often used. In this work we tested, whether equivalent dipole orientation can be used for ischemia classification. 120-channel body surface potential mapping (BSPM) was measured from 22 ischemic patients during PTCA operation. ST60 amplitude map was chosen as classification parameter. The equivalent dipoles between different coronary arteries differed in position and especially in orientation. Dipole moment orientation was used for classification of ischemic arteries. In addition to BSPM, 12-lead, and some other small lead sets were used for fitting. The best classification results (not counting BSPM) were obtained with modified 12-lead layout (LAD 100%, LCX 86%, RCA 100%). The results show that dipole modeling is a potential tool for ischemia classification

Keywords

bioelectric potentials; biomedical measurement; cardiovascular system; diseases; electrocardiography; medical signal processing; signal classification; 12-lead ECG; 120-channel body surface potential measurement; ST60 amplitude map; acute ischemia classification; coronary arteries; electrocardiography; equivalent dipole moment orientation; percutaneous transluminary coronary angioplasty; Arteries; Biomedical measurements; Cardiology; Electrocardiography; Electrodes; Ischemic pain; Laplace equations; Monitoring; Surface reconstruction; Testing;

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.2005.1588186

Filename

1588186