Title :
Wavelet transform for cross correlation processing in PW ultrasound
Author :
Xu, Xiao-Liang ; Greenleaf, James F.
Author_Institution :
Biodynamics Res. Unit, Mayo Clinic, Rochester, MN, USA
Abstract :
Addresses applying the wavelet transform to cross correlation (CC) processing in pulsed-wave (PW) ultrasound for measurement of tissue motion and the velocity profile of blood flow. Cross correlation processing has certain advantages over the Doppler method in performance, but its performance is sensitive to window size and noise. The authors describe how CC processing can be done with the wavelet transform. They mention that the wavelet transform has a unique feature of varying time-frequency resolution. Cross correlation processing in the wavelet domain is more robust with respect to window size and less sensitive to noise
Keywords :
blood flow measurement; Doppler method; blood flow velocity profile; cross correlation processing; matched filtering; noise; pulsed-wave ultrasound measurement; tissue motion measurement; varying time-frequency resolution; window size; Blood flow; Fluid flow measurement; Motion measurement; Pulse measurements; Time frequency analysis; Ultrasonic imaging; Ultrasonic variables measurement; Velocity measurement; Wavelet domain; Wavelet transforms;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.415404
