<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>Ischemic changes in small areas of myocardium can be detected from difference integral maps computed from body surface potentials measured on the same subject in situations with and without manifestation of ischemia. The proposed method for their detection is the inverse solution with 2 dipoles. Surface potentials were recorded at rest and during stress on 10 patients and 3 healthy subjects. Difference integral maps were computed for 4 intervals of integration of electrocardiographic signal (QRST, QRSU, STT and STU) and their properties and applicability as input data for inverse identification of ischemic lesions were compared. The results showed that better (more reliable) inverse solutions can be obtained from difference integral maps computed either from QRST or from STT interval of integration. The average correlation between these maps was 97%. The use of the end of U wave instead of the end of T wave for interval of integration did not improve the results.</p></abstract>

Ischemic changes in small areas of myocardium can be detected from difference integral maps computed from body surface potentials measured on the same subject in situations with and without manifestation of ischemia. The proposed method for their detection is the inverse solution with 2 dipoles. Surface potentials were recorded at rest and during stress on 10 patients and 3 healthy subjects. Difference integral maps were computed for 4 intervals of integration of electrocardiographic signal (QRST, QRSU, STT and STU) and their properties and applicability as input data for inverse identification of ischemic lesions were compared. The results showed that better (more reliable) inverse solutions can be obtained from difference integral maps computed either from QRST or from STT interval of integration. The average correlation between these maps was 97%. The use of the end of U wave instead of the end of T wave for interval of integration did not improve the results.

Identification of Ischemic Lesions Based on Difference Integral Maps, Comparison of Several ECG Intervals

Institute of Measurement Science, SAS, Bratislava, Slovakia

Institute of Biocybernetics and Biomedical Engineering, PAS, Warsaw, Poland

Measurement Science Review

Ischemic changes in small areas of myocardium can be detected from difference integral maps computed from body surface potentials measured on the same subject...

Identification of Ischemic Lesions Based on Difference Integral Maps, Comparison of Several ECG Intervals

Published Online: Nov 06, 2009

Page range: 117 - 121

DOI: https://doi.org/10.2478/v10048-009-0021-7

Keywords
Integral body surface potential maps, ischemic lesions, inverse solution to 2 dipoles

This content is open access.

Identification of Ischemic Lesions Based on Difference Integral Maps, Comparison of Several ECG Intervals

Published Online: Nov 06, 2009

Page range: 117 - 121

DOI: https://doi.org/10.2478/v10048-009-0021-7

KeywordsIntegral body surface potential maps, ischemic lesions, inverse solution to 2 dipoles

This content is open access.

Keywords
Integral body surface potential maps, ischemic lesions, inverse solution to 2 dipoles