Title :
Time-frequency analysis of Doppler sinusoidal shift signal with new figure eight kernel
Author :
Noguchi, Yasuaki ; Watanabe, Kohtaro ; Kashiwagi, Ei-Ichi ; Kawamura, Toshiyasu ; Kinoshita, Kazuyuki ; Matsumoto, Fujihiko ; Sugimoto, Suguru
Author_Institution :
Dept. of Appl. Phys., Nat. Defence Acad., Yokosuka, Japan
Abstract :
In order to apply the Cohen´s class Time-Frequency (TF) analysis using a novel kernel to the blood flow signal analysis, we investigated a higher resolution kernel for the ultrasound Doppler sinusoidal shift signal. We used three kinds of kernel, the Wigner distribution, the Choi-Williams distribution (CWD), and our new figure eight kernel (FED). The results show that the demodulation accuracy with FED is higher and the negative components are smaller than the CWD
Keywords :
Doppler measurement; Wigner distribution; acoustic signal processing; biomedical ultrasonics; blood flow measurement; demodulation; medical signal processing; time-frequency analysis; Choi-Williams distribution; Cohen class time-frequency analysis; Doppler sinusoidal shift signal; Wigner distribution; blood flow signal analysis; demodulation accuracy; figure eight kernel; higher resolution kernel; negative components; time-frequency analysis; ultrasound Doppler signal; Blood flow; Computer science; Demodulation; Fluid flow measurement; Kernel; Physics; Signal analysis; Signal resolution; Time frequency analysis; 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
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-5674-8
DOI :
10.1109/IEMBS.1999.804117
