Title :
A simple method for speckle-reduced Doppler spectrogram
Author :
Guo, Zhenyu ; Wang, Shipu ; Duyand, L.-G. ; Loew, Murray
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., George Washington Univ., Washington, DC, USA
fDate :
10/1/1999 12:00:00 AM
Abstract :
To reduce the Doppler speckles, a windowed short-time auto-correlation technique was proposed to estimate the Doppler spectrogram. This technique reduces the Doppler spectral variations by windowing its autocorrelation function with a Gaussian window before Fourier transform. With simulated signals, it was showed that this technique is a promising one for Doppler speckles reduction
Keywords :
Doppler measurement; Fourier transforms; acoustic correlation; biomedical ultrasonics; blood flow measurement; medical signal processing; speckle; spectral analysis; Doppler spectrogram; Fourier transform; Gaussian window; blood flow signals; carotid artery; speckle reduction; spectral variations; windowed short-time autocorrelation technique; Autocorrelation; Biomedical engineering; Cardiovascular diseases; Data mining; Fourier transforms; Laboratories; Pins; Signal analysis; Spectrogram; Ultrasonic imaging;
Conference_Titel :
[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.804135
