Title :
Time-frequency analysis of heart sounds before and after angioplasty
Author :
Tinati, M.A. ; Bouzerdoum, A. ; Mazumdar, J. ; Mahar, L.J.
Author_Institution :
Dept. of Electr. & Electron. Eng., Adelaide Univ., SA, Australia
Abstract :
Heart sounds have been recorded from patients with coronary artery disease before and after angioplasty in the cardiology department of the Royal Adelaide Hospital. We present an algorithm to decompose the recorded signals to beat cycles synchronized with electrocardiogram (ECG) and detect the most correlated cycles. Time-frequency analysis is carried out on the isolated beat cycles, and another algorithm is used to detect local maxima in the time-frequency plane. The detected maxima are then compared before and after angioplasty
Keywords :
correlation methods; echocardiography; medical signal processing; patient diagnosis; signal detection; synchronisation; time-frequency analysis; ECG; Royal Adelaide Hospital; algorithm; angioplasty; coronary artery disease; correlated cycles detection; electrocardiogram; heart sounds; local maxima; patients; recorded signals decomposition; synchronized beat cycles; time-frequency analysis; Acoustical engineering; Angioplasty; Cardiology; Coronary arteriosclerosis; Electrocardiography; Frequency domain analysis; Heart; Hospitals; Signal analysis; Time frequency analysis;
Conference_Titel :
Digital Signal Processing Proceedings, 1997. DSP 97., 1997 13th International Conference on
Conference_Location :
Santorini
Print_ISBN :
0-7803-4137-6
DOI :
10.1109/ICDSP.1997.627972
