TY - GEN
T1 - Experimental validation of simultaneous excitation of orthogonal eoded push pulses for fast shear wave elastography
AU - Matsumoto, Takuya
AU - Kondo, Kengo
AU - Namita, Takeshi
AU - Yamakawa, Makoto
AU - Shiina, Tsuyoshi
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/10/31
Y1 - 2017/10/31
N2 - Shear wave elastography is useful for quantitatively evaluating tissue elasticity by measuring the speed of a shear wave induced within the body by acoustic radiation. The purpose of this paper is to demonstrate a pushing-and-imaging sequence, coded push pulse excitation to increase the signal-to-noise ratio (SNR) of the observed shear wave propagation without increasing measurement time and push pulse amplitude. In this paper, we irradiate multiple coded-pulse sequences from different locations at the same time and separate overlapped shear waves by decoding to quickly image a wider area with high SNR. We divided the aperture into two sub-apertures and irradiated coded pulse sequences from each sub-aperture at the same time using Orthogonal Golay Code (OGC). The received shear waves induced by two push pulse sequences are overlapped but are separated orthogonaly after postprocessing. As a result, measurement time decreases and SNR increases due to push pulse compression. The proposed method was validated with an elasticity quality assurance phantom using a linear probe (VeraSonics, L7-4).
AB - Shear wave elastography is useful for quantitatively evaluating tissue elasticity by measuring the speed of a shear wave induced within the body by acoustic radiation. The purpose of this paper is to demonstrate a pushing-and-imaging sequence, coded push pulse excitation to increase the signal-to-noise ratio (SNR) of the observed shear wave propagation without increasing measurement time and push pulse amplitude. In this paper, we irradiate multiple coded-pulse sequences from different locations at the same time and separate overlapped shear waves by decoding to quickly image a wider area with high SNR. We divided the aperture into two sub-apertures and irradiated coded pulse sequences from each sub-aperture at the same time using Orthogonal Golay Code (OGC). The received shear waves induced by two push pulse sequences are overlapped but are separated orthogonaly after postprocessing. As a result, measurement time decreases and SNR increases due to push pulse compression. The proposed method was validated with an elasticity quality assurance phantom using a linear probe (VeraSonics, L7-4).
KW - Elasticity Image
KW - Measurement Time Improvement
KW - Orthogonal Golay Code
KW - Signal-To-Noise-Ratio Improvement
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U2 - 10.1109/ULTSYM.2017.8092921
DO - 10.1109/ULTSYM.2017.8092921
M3 - Conference contribution
AN - SCOPUS:85039437331
T3 - IEEE International Ultrasonics Symposium, IUS
BT - 2017 IEEE International Ultrasonics Symposium, IUS 2017
PB - IEEE Computer Society
T2 - 2017 IEEE International Ultrasonics Symposium, IUS 2017
Y2 - 6 September 2017 through 9 September 2017
ER -