Abstract
For the detection and analysis of T-wave alternans (TWA) is offered use the integral method based on the Walsh functions spectral amplitudes calculation. Spectral transformation in basis of Walsh functions was produced in time-domain window with 132 ms duration, located symmetrically to energy center of the ST/T-wave in each heartbeat. Values of spectral amplitudes are possible to consider as qualitative and quantitative morphology parameters. The comparison of morphology parameters of T-wave of consequent heartbeats allows to reveal micro alternans. Algorithms and software for detection the energy center of T-wave in each heartbeat, calculations morphology parameters and identification of T-wave alternans were designed. The offered method is characterized by high noise proof, does not depend on heart rate and can reveal not only two but more distinct forms of T-waves.
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