Wavelet analysis of mechanical heart valve sounds with paravalvular leakage

摘要

Discrete wavelet transform has been proposed for the diagnosis of paravalvular leakage(PVL) occurs after Mechanical Heart Valve(MHV) replacement. Mechanical heart sounds of 2 patients with PVL and 5 volunteers with normal MHV was recorded and analyzed with different wavelets. As a result, it is statically shown that Daubechies 2 wavelet function is suitable for diagnosis of PVL.