Title :
Time-frequency interpretation of ultra-high-frequency QRS components
Author :
Jurak, P. ; Halamek, J. ; Leinveber, P. ; Reichlova, Tereza ; Plesinger, Filip ; Vesely, Petr ; Vondra, V. ; Klimes, Petr ; Sumbera, Josef ; Zeman, Karel ; Novak, Martin
Author_Institution :
Inst. of Sci. Instrum., Brno, Czech Republic
Abstract :
This paper presents a method for time-frequency representation of ultra-high-frequency components in the QRS complex in high-sensitivity and high-frequency electrocardiography signal measurement. Time-frequency interpretation forms shapes that look like fire - FLAMES. The width, intensity and position of FLAMES characterise the electrical properties of the human heart. FLAMES are able to differentiate electrical changes during asynchronous heart muscle activation and identify changes in electrical activation during heart ischemia, infarctions and structural changes of the myocardium. The difference in FLAMES is demonstrated in healthy young subject and heart-failure subject.
Keywords :
bioelectric potentials; diseases; electrocardiography; medical signal processing; muscle; sensitivity; time-frequency analysis; FLAMES characteristics; asynchronous heart muscle activation; electrical activation; electrical changes; electrical properties; heart ischemia; heart-failure subject; high-frequency electrocardiography signal measurement; high-sensitivity electrocardiography signal measurement; human heart; infarctions; myocardium; structural changes; time-frequency interpretation; ultrahigh-frequency QRS components; Electrocardiography; Fires; Heart; Myocardium; Oscillators; Shape; Time-frequency analysis;
Conference_Titel :
Cardiovascular Oscillations (ESGCO), 2014 8th Conference of the European Study Group on
Conference_Location :
Trento
DOI :
10.1109/ESGCO.2014.6847526
