Title :
Rapid shear wave measurement for SDUV with broadband excitation pulses and non-uniform sampling
Author :
Zheng, Yi ; Yao, Aiping ; Chen, Shigao ; Greenleaf, James F.
Author_Institution :
Dept. of Electr. & Comput. Eng., St. Cloud State Univ., St. Cloud, MN
Abstract :
We propose a method using broadband tone burst excitation pulses with non-uniform sampling for Shearwave Dispersion Ultrasound Vibrometry (SDUV). The method allows long excitation pulses with a high PRF of detection pulses to induce a strong tissue motion and obtain strong detection signal. The method also simultaneously estimates all harmonics of tissue motion induced by the broadband excitation pulses so that the shear wave can be rapidly estimated with minimized bias and distortion.
Keywords :
biological effects of acoustic radiation; biological tissues; biomedical ultrasonics; broadband tone burst excitation pulses; nonuniform sampling; rapid shear wave measurement; shearwave dispersion ultrasound vibrometry; tissue motion; Dispersion; Frequency; Motion detection; Motion estimation; Power harmonic filters; Pulse measurements; Sampling methods; Ultrasonic imaging; Ultrasonic transducers; Ultrasonic variables measurement; Kalman filter; Shearwave; elasticity; harmonic motion; pulse echo ultrasound; vibrometry; viscosity;
Conference_Titel :
Ultrasonics Symposium, 2008. IUS 2008. IEEE
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2428-3
Electronic_ISBN :
978-1-4244-2480-1
DOI :
10.1109/ULTSYM.2008.0053