Time, time-frequency and displacement-frequency analysis of embolic signals

Author

Ana, Leiria ; Moura, M.M.M. ; Graça, Ruano M. ; Evans, D.H.

Author_Institution

CSI, Algarve Univ., Faro, Portugal

fYear

2005

fDate

1-3 Sept. 2005

Firstpage

49

Lastpage

53

Abstract

The characteristics of a new method, the displacement-frequency representation, prompted the study of its use for the analysis of embolic blood flow signals. This paper reports the comparison of displacement-frequency and time-frequency methods with time domain methods, in the characterization of emboli. The study was performed on clinical signals derived from gaseous and participate embolic events. The results obtained with the different approaches were compared. The conclusions of this study provide encouragement for the use of displacement-frequency domain processing for this kind of analysis.

Keywords

haemodynamics; haemorheology; medical signal processing; time-frequency analysis; displacement-frequency analysis; embolic blood flow signals; time domain methods; time-frequency analysis; Biomedical acoustics; Biomedical signal processing; Blood flow; Cardiology; Feature extraction; Frequency estimation; Signal analysis; Spectral analysis; Time frequency analysis; Ultrasonic imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Signal Processing, 2005 IEEE International Workshop on

Print_ISBN

0-7803-9030-X

Electronic_ISBN

0-7803-9031-8

Type

conf

DOI

10.1109/WISP.2005.1531631

Filename

1531631