[An algorithm for detecting T-wave alternans (TWA) based on the maximum of T-waves].
An algorithm of detecting the TWA (T-wave alternans) based on the maximum of T waves transformed by FFT (Fast Fourier Transform) is described in the paper. By using the method we can reduce the sampling rate, which means "smaller amount of calculation", and solve the problem "the sampling point of T wave changes with the rate of heart beat". The 128 maximum values of T wave in series normal ST-T complex are used to carry out FFT transforms. The TWA is detected by using the frequency of power spectrum.
Zhao
Jie
J
School of Physics and Electronics, Shandong Normal University, Jinan 250014, China.
Hua
Mei
M
D000465:Algorithms; D001145:Arrhythmias, Cardiac / Q000175:diagnosis* / Q000209:etiology / Q000503:physiopathology; D004562:Electrocardiography; D005583:Fourier Analysis; D006339:Heart Rate; D006801:Humans