TY - JOUR
T1 - Ultrasound vibrometry using orthogonal-frequency-based vibration pulses
AU - Zheng, Yi
AU - Yao, Aiping
AU - Chen, Shigao
AU - Urban, Matthew W.
AU - Lin, Haoming
AU - Chen, Xin
AU - Guo, Yanrong
AU - Chen, Ke
AU - Wang, Tianfu
AU - Chen, Siping
PY - 2013
Y1 - 2013
N2 - New vibration pulses are developed for shear wave generation in a tissue region with preferred spectral distributions for ultrasound vibrometry applications. The primary objective of this work is to increase the frequency range of detectable harmonics of the shear wave. The secondary objective is to reduce the required peak intensity of transmitted pulses that induce the vibrations and shear waves. Unlike the periodic binary vibration pulses, the new vibration pulses have multiple pulses in one fundamental period of the vibration. The pulses are generated from an orthogonal-frequency wave composed of several sinusoidal signals, the amplitudes of which increase with frequency to compensate for higher loss at higher frequency in tissues. The new method has been evaluated by studying the shear wave propagation in in vitro chicken and swine liver. The experimental results show that the new vibration pulses significantly increase tissue vibration with a reduced peak ultrasound intensity, compared with the binary vibration pulses.
AB - New vibration pulses are developed for shear wave generation in a tissue region with preferred spectral distributions for ultrasound vibrometry applications. The primary objective of this work is to increase the frequency range of detectable harmonics of the shear wave. The secondary objective is to reduce the required peak intensity of transmitted pulses that induce the vibrations and shear waves. Unlike the periodic binary vibration pulses, the new vibration pulses have multiple pulses in one fundamental period of the vibration. The pulses are generated from an orthogonal-frequency wave composed of several sinusoidal signals, the amplitudes of which increase with frequency to compensate for higher loss at higher frequency in tissues. The new method has been evaluated by studying the shear wave propagation in in vitro chicken and swine liver. The experimental results show that the new vibration pulses significantly increase tissue vibration with a reduced peak ultrasound intensity, compared with the binary vibration pulses.
UR - http://www.scopus.com/inward/record.url?scp=84887292707&partnerID=8YFLogxK
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U2 - 10.1109/TUFFC.2013.6644739
DO - 10.1109/TUFFC.2013.6644739
M3 - Article
C2 - 24158291
AN - SCOPUS:84887292707
SN - 0885-3010
VL - 60
SP - 2359
EP - 2370
JO - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
JF - IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
IS - 11
M1 - 6644739
ER -